Home / 129,341,793.60-194,012,690.40-78,197,486.40

Finding the Fourth Proportional to 129,341,793.60, 194,012,690.40 and 78,197,486.40

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Solution

The fourth proportional to 129,341,793.60, 194,012,690.40 and 78,197,486.40 is: 117,296,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,341,793.60 : 194,012,690.40 = 78,197,486.40 : x
  2. Step 2: Convert to fraction form
    129,341,793.60/194,012,690.40 = 78,197,486.40/x
  3. Step 3: Cross multiply
    129,341,793.60x = 194,012,690.40 × 78,197,486.40
  4. Step 4: Simplify right side
    129,341,793.60x = 15,171,304,718,981,412
  5. Step 5: Solve for x
    x = 15,171,304,718,981,412/129,341,793.60
  6. Step 6: Final answer
    x = 117,296,229.60

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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.