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Finding the Fourth Proportional to 137,763.15, 206,250.53 and 84,816.15

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Solution

The fourth proportional to 137,763.15, 206,250.53 and 84,816.15 is: 126,981.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,763.15 : 206,250.53 = 84,816.15 : x
  2. Step 2: Convert to fraction form
    137,763.15/206,250.53 = 84,816.15/x
  3. Step 3: Cross multiply
    137,763.15x = 206,250.53 × 84,816.15
  4. Step 4: Simplify right side
    137,763.15x = 17,493,375,465.98
  5. Step 5: Solve for x
    x = 17,493,375,465.98/137,763.15
  6. Step 6: Final answer
    x = 126,981.53

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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.