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Finding the Fourth Proportional to 119,888.74, 165,446.13 and 66,173.41

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Solution

The fourth proportional to 119,888.74, 165,446.13 and 66,173.41 is: 91,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,888.74 : 165,446.13 = 66,173.41 : x
  2. Step 2: Convert to fraction form
    119,888.74/165,446.13 = 66,173.41/x
  3. Step 3: Cross multiply
    119,888.74x = 165,446.13 × 66,173.41
  4. Step 4: Simplify right side
    119,888.74x = 10,948,134,593.40
  5. Step 5: Solve for x
    x = 10,948,134,593.40/119,888.74
  6. Step 6: Final answer
    x = 91,319.12

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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.