Home / 138,659,213.60-207,932,833.20-47,736,000.80

Finding the Fourth Proportional to 138,659,213.60, 207,932,833.20 and 47,736,000.80

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Solution

The fourth proportional to 138,659,213.60, 207,932,833.20 and 47,736,000.80 is: 71,584,726.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,659,213.60 : 207,932,833.20 = 47,736,000.80 : x
  2. Step 2: Convert to fraction form
    138,659,213.60/207,932,833.20 = 47,736,000.80/x
  3. Step 3: Cross multiply
    138,659,213.60x = 207,932,833.20 × 47,736,000.80
  4. Step 4: Simplify right side
    138,659,213.60x = 9,925,881,891,981,466
  5. Step 5: Solve for x
    x = 9,925,881,891,981,466/138,659,213.60
  6. Step 6: Final answer
    x = 71,584,726.57

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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.