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Finding the Fourth Proportional to 119,787, 165,304.68 and 66,070.92

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Solution

The fourth proportional to 119,787, 165,304.68 and 66,070.92 is: 91,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,787 : 165,304.68 = 66,070.92 : x
  2. Step 2: Convert to fraction form
    119,787/165,304.68 = 66,070.92/x
  3. Step 3: Cross multiply
    119,787x = 165,304.68 × 66,070.92
  4. Step 4: Simplify right side
    119,787x = 10,921,832,287.91
  5. Step 5: Solve for x
    x = 10,921,832,287.91/119,787
  6. Step 6: Final answer
    x = 91,177.11

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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.