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Finding the Fourth Proportional to 137,230.72, 205,818.06 and 48,487.12

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Solution

The fourth proportional to 137,230.72, 205,818.06 and 48,487.12 is: 72,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,230.72 : 205,818.06 = 48,487.12 : x
  2. Step 2: Convert to fraction form
    137,230.72/205,818.06 = 48,487.12/x
  3. Step 3: Cross multiply
    137,230.72x = 205,818.06 × 48,487.12
  4. Step 4: Simplify right side
    137,230.72x = 9,979,524,973.39
  5. Step 5: Solve for x
    x = 9,979,524,973.39/137,230.72
  6. Step 6: Final answer
    x = 72,720.78

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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.