Home / 99,687.30-149,612.55-98,909.70

Finding the Fourth Proportional to 99,687.30, 149,612.55 and 98,909.70

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Solution

The fourth proportional to 99,687.30, 149,612.55 and 98,909.70 is: 148,445.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,687.30 : 149,612.55 = 98,909.70 : x
  2. Step 2: Convert to fraction form
    99,687.30/149,612.55 = 98,909.70/x
  3. Step 3: Cross multiply
    99,687.30x = 149,612.55 × 98,909.70
  4. Step 4: Simplify right side
    99,687.30x = 14,798,132,436.74
  5. Step 5: Solve for x
    x = 14,798,132,436.74/99,687.30
  6. Step 6: Final answer
    x = 148,445.51

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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.