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Finding the Fourth Proportional to 100,932.90, 151,727.40 and 86,498.70

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Solution

The fourth proportional to 100,932.90, 151,727.40 and 86,498.70 is: 130,029.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,932.90 : 151,727.40 = 86,498.70 : x
  2. Step 2: Convert to fraction form
    100,932.90/151,727.40 = 86,498.70/x
  3. Step 3: Cross multiply
    100,932.90x = 151,727.40 × 86,498.70
  4. Step 4: Simplify right side
    100,932.90x = 13,124,222,854.38
  5. Step 5: Solve for x
    x = 13,124,222,854.38/100,932.90
  6. Step 6: Final answer
    x = 130,029.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.