Home / 99,350.80-148,853.40-81,725.20

Finding the Fourth Proportional to 99,350.80, 148,853.40 and 81,725.20

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Solution

The fourth proportional to 99,350.80, 148,853.40 and 81,725.20 is: 122,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,350.80 : 148,853.40 = 81,725.20 : x
  2. Step 2: Convert to fraction form
    99,350.80/148,853.40 = 81,725.20/x
  3. Step 3: Cross multiply
    99,350.80x = 148,853.40 × 81,725.20
  4. Step 4: Simplify right side
    99,350.80x = 12,165,073,885.68
  5. Step 5: Solve for x
    x = 12,165,073,885.68/99,350.80
  6. Step 6: Final answer
    x = 122,445.66

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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.