Home / 157,691.41-217,605.89-86,070.20

Finding the Fourth Proportional to 157,691.41, 217,605.89 and 86,070.20

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Solution

The fourth proportional to 157,691.41, 217,605.89 and 86,070.20 is: 118,772.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,691.41 : 217,605.89 = 86,070.20 : x
  2. Step 2: Convert to fraction form
    157,691.41/217,605.89 = 86,070.20/x
  3. Step 3: Cross multiply
    157,691.41x = 217,605.89 × 86,070.20
  4. Step 4: Simplify right side
    157,691.41x = 18,729,381,600.62
  5. Step 5: Solve for x
    x = 18,729,381,600.62/157,691.41
  6. Step 6: Final answer
    x = 118,772.37

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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.