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Finding the Fourth Proportional to 99,839.80, 149,684.82 and 60,388.84

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Solution

The fourth proportional to 99,839.80, 149,684.82 and 60,388.84 is: 90,537.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,839.80 : 149,684.82 = 60,388.84 : x
  2. Step 2: Convert to fraction form
    99,839.80/149,684.82 = 60,388.84/x
  3. Step 3: Cross multiply
    99,839.80x = 149,684.82 × 60,388.84
  4. Step 4: Simplify right side
    99,839.80x = 9,039,292,645.41
  5. Step 5: Solve for x
    x = 9,039,292,645.41/99,839.80
  6. Step 6: Final answer
    x = 90,537.97

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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.