Home / 99,781.13-149,592.21-57,613.39

Finding the Fourth Proportional to 99,781.13, 149,592.21 and 57,613.39

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Solution

The fourth proportional to 99,781.13, 149,592.21 and 57,613.39 is: 86,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,781.13 : 149,592.21 = 57,613.39 : x
  2. Step 2: Convert to fraction form
    99,781.13/149,592.21 = 57,613.39/x
  3. Step 3: Cross multiply
    99,781.13x = 149,592.21 × 57,613.39
  4. Step 4: Simplify right side
    99,781.13x = 8,618,513,745.66
  5. Step 5: Solve for x
    x = 8,618,513,745.66/99,781.13
  6. Step 6: Final answer
    x = 86,374.18

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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.