Home / 154,631.72-213,391.67-86,649.23

Finding the Fourth Proportional to 154,631.72, 213,391.67 and 86,649.23

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Solution

The fourth proportional to 154,631.72, 213,391.67 and 86,649.23 is: 119,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,631.72 : 213,391.67 = 86,649.23 : x
  2. Step 2: Convert to fraction form
    154,631.72/213,391.67 = 86,649.23/x
  3. Step 3: Cross multiply
    154,631.72x = 213,391.67 × 86,649.23
  4. Step 4: Simplify right side
    154,631.72x = 18,490,223,994.15
  5. Step 5: Solve for x
    x = 18,490,223,994.15/154,631.72
  6. Step 6: Final answer
    x = 119,575.88

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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.