Home / 154,406.76-213,085.11-86,423.16

Finding the Fourth Proportional to 154,406.76, 213,085.11 and 86,423.16

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Solution

The fourth proportional to 154,406.76, 213,085.11 and 86,423.16 is: 119,266.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,406.76 : 213,085.11 = 86,423.16 : x
  2. Step 2: Convert to fraction form
    154,406.76/213,085.11 = 86,423.16/x
  3. Step 3: Cross multiply
    154,406.76x = 213,085.11 × 86,423.16
  4. Step 4: Simplify right side
    154,406.76x = 18,415,488,555.15
  5. Step 5: Solve for x
    x = 18,415,488,555.15/154,406.76
  6. Step 6: Final answer
    x = 119,266.08

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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.