Home / 99,742.20-149,613.30-92,743.80

Finding the Fourth Proportional to 99,742.20, 149,613.30 and 92,743.80

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Solution

The fourth proportional to 99,742.20, 149,613.30 and 92,743.80 is: 139,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,742.20 : 149,613.30 = 92,743.80 : x
  2. Step 2: Convert to fraction form
    99,742.20/149,613.30 = 92,743.80/x
  3. Step 3: Cross multiply
    99,742.20x = 149,613.30 × 92,743.80
  4. Step 4: Simplify right side
    99,742.20x = 13,875,705,972.54
  5. Step 5: Solve for x
    x = 13,875,705,972.54/99,742.20
  6. Step 6: Final answer
    x = 139,115.70

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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.