Home / 137,691,769.20-206,317,204.20-72,911,079.60

Finding the Fourth Proportional to 137,691,769.20, 206,317,204.20 and 72,911,079.60

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Solution

The fourth proportional to 137,691,769.20, 206,317,204.20 and 72,911,079.60 is: 109,249,886.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,691,769.20 : 206,317,204.20 = 72,911,079.60 : x
  2. Step 2: Convert to fraction form
    137,691,769.20/206,317,204.20 = 72,911,079.60/x
  3. Step 3: Cross multiply
    137,691,769.20x = 206,317,204.20 × 72,911,079.60
  4. Step 4: Simplify right side
    137,691,769.20x = 15,042,810,098,275,652
  5. Step 5: Solve for x
    x = 15,042,810,098,275,652/137,691,769.20
  6. Step 6: Final answer
    x = 109,249,886.07

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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.