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Finding the Fourth Proportional to 99,449.25, 137,239.97 and 54,737.25

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Solution

The fourth proportional to 99,449.25, 137,239.97 and 54,737.25 is: 75,537.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,449.25 : 137,239.97 = 54,737.25 : x
  2. Step 2: Convert to fraction form
    99,449.25/137,239.97 = 54,737.25/x
  3. Step 3: Cross multiply
    99,449.25x = 137,239.97 × 54,737.25
  4. Step 4: Simplify right side
    99,449.25x = 7,512,138,274.20
  5. Step 5: Solve for x
    x = 7,512,138,274.20/99,449.25
  6. Step 6: Final answer
    x = 75,537.41

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1.5x scale

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.