Home / 137,840,489.60-206,758,891.20-42,102,838.40

Finding the Fourth Proportional to 137,840,489.60, 206,758,891.20 and 42,102,838.40

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Solution

The fourth proportional to 137,840,489.60, 206,758,891.20 and 42,102,838.40 is: 63,153,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,840,489.60 : 206,758,891.20 = 42,102,838.40 : x
  2. Step 2: Convert to fraction form
    137,840,489.60/206,758,891.20 = 42,102,838.40/x
  3. Step 3: Cross multiply
    137,840,489.60x = 206,758,891.20 × 42,102,838.40
  4. Step 4: Simplify right side
    137,840,489.60x = 8,705,136,183,956,781
  5. Step 5: Solve for x
    x = 8,705,136,183,956,781/137,840,489.60
  6. Step 6: Final answer
    x = 63,153,694.60

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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.