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Finding the Fourth Proportional to 99,309.92, 137,079.06 and 63,500.08

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Solution

The fourth proportional to 99,309.92, 137,079.06 and 63,500.08 is: 87,650.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,309.92 : 137,079.06 = 63,500.08 : x
  2. Step 2: Convert to fraction form
    99,309.92/137,079.06 = 63,500.08/x
  3. Step 3: Cross multiply
    99,309.92x = 137,079.06 × 63,500.08
  4. Step 4: Simplify right side
    99,309.92x = 8,704,531,276.32
  5. Step 5: Solve for x
    x = 8,704,531,276.32/99,309.92
  6. Step 6: Final answer
    x = 87,650.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.