Home / 129,486,530.40-194,198,691.60-74,780,815.20

Finding the Fourth Proportional to 129,486,530.40, 194,198,691.60 and 74,780,815.20

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Solution

The fourth proportional to 129,486,530.40, 194,198,691.60 and 74,780,815.20 is: 112,153,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,486,530.40 : 194,198,691.60 = 74,780,815.20 : x
  2. Step 2: Convert to fraction form
    129,486,530.40/194,198,691.60 = 74,780,815.20/x
  3. Step 3: Cross multiply
    129,486,530.40x = 194,198,691.60 × 74,780,815.20
  4. Step 4: Simplify right side
    129,486,530.40x = 14,522,336,468,621,392
  5. Step 5: Solve for x
    x = 14,522,336,468,621,392/129,486,530.40
  6. Step 6: Final answer
    x = 112,153,259.68

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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.