Home / 153,148.74-211,314.29-89,474.23

Finding the Fourth Proportional to 153,148.74, 211,314.29 and 89,474.23

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Solution

The fourth proportional to 153,148.74, 211,314.29 and 89,474.23 is: 123,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,148.74 : 211,314.29 = 89,474.23 : x
  2. Step 2: Convert to fraction form
    153,148.74/211,314.29 = 89,474.23/x
  3. Step 3: Cross multiply
    153,148.74x = 211,314.29 × 89,474.23
  4. Step 4: Simplify right side
    153,148.74x = 18,907,183,385.75
  5. Step 5: Solve for x
    x = 18,907,183,385.75/153,148.74
  6. Step 6: Final answer
    x = 123,456.34

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Half scale
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Double scale
Find fourth proportional to 153,149.74, 211,315.67 and 89,475.23
Similar ratio
Find fourth proportional to 229,723.11, 316,971.44 and 134,211.35
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.