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Finding the Fourth Proportional to 157,671.53, 217,587.31 and 86,053.13

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Solution

The fourth proportional to 157,671.53, 217,587.31 and 86,053.13 is: 118,753.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,671.53 : 217,587.31 = 86,053.13 : x
  2. Step 2: Convert to fraction form
    157,671.53/217,587.31 = 86,053.13/x
  3. Step 3: Cross multiply
    157,671.53x = 217,587.31 × 86,053.13
  4. Step 4: Simplify right side
    157,671.53x = 18,724,067,770.71
  5. Step 5: Solve for x
    x = 18,724,067,770.71/157,671.53
  6. Step 6: Final answer
    x = 118,753.64

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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.