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Finding the Fourth Proportional to 99,712.62, 149,217.87 and 62,290.32

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Solution

The fourth proportional to 99,712.62, 149,217.87 and 62,290.32 is: 93,216.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,712.62 : 149,217.87 = 62,290.32 : x
  2. Step 2: Convert to fraction form
    99,712.62/149,217.87 = 62,290.32/x
  3. Step 3: Cross multiply
    99,712.62x = 149,217.87 × 62,290.32
  4. Step 4: Simplify right side
    99,712.62x = 9,294,828,872.02
  5. Step 5: Solve for x
    x = 9,294,828,872.02/99,712.62
  6. Step 6: Final answer
    x = 93,216.17

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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.