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Finding the Fourth Proportional to 119,691.41, 165,127.77 and 68,685.71

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Solution

The fourth proportional to 119,691.41, 165,127.77 and 68,685.71 is: 94,759.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,691.41 : 165,127.77 = 68,685.71 : x
  2. Step 2: Convert to fraction form
    119,691.41/165,127.77 = 68,685.71/x
  3. Step 3: Cross multiply
    119,691.41x = 165,127.77 × 68,685.71
  4. Step 4: Simplify right side
    119,691.41x = 11,341,917,297.53
  5. Step 5: Solve for x
    x = 11,341,917,297.53/119,691.41
  6. Step 6: Final answer
    x = 94,759.66

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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.