Home / 100,100.62-138,125.19-59,805.82

Finding the Fourth Proportional to 100,100.62, 138,125.19 and 59,805.82

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Solution

The fourth proportional to 100,100.62, 138,125.19 and 59,805.82 is: 82,523.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,100.62 : 138,125.19 = 59,805.82 : x
  2. Step 2: Convert to fraction form
    100,100.62/138,125.19 = 59,805.82/x
  3. Step 3: Cross multiply
    100,100.62x = 138,125.19 × 59,805.82
  4. Step 4: Simplify right side
    100,100.62x = 8,260,690,647.53
  5. Step 5: Solve for x
    x = 8,260,690,647.53/100,100.62
  6. Step 6: Final answer
    x = 82,523.87

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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.