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Finding the Fourth Proportional to 99,737.03, 137,634.11 and 54,415.91

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Solution

The fourth proportional to 99,737.03, 137,634.11 and 54,415.91 is: 75,092.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,737.03 : 137,634.11 = 54,415.91 : x
  2. Step 2: Convert to fraction form
    99,737.03/137,634.11 = 54,415.91/x
  3. Step 3: Cross multiply
    99,737.03x = 137,634.11 × 54,415.91
  4. Step 4: Simplify right side
    99,737.03x = 7,489,485,342.69
  5. Step 5: Solve for x
    x = 7,489,485,342.69/99,737.03
  6. Step 6: Final answer
    x = 75,092.32

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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.