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Finding the Fourth Proportional to 99,449.75, 137,240.66 and 54,737.75

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Solution

The fourth proportional to 99,449.75, 137,240.66 and 54,737.75 is: 75,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,449.75 : 137,240.66 = 54,737.75 : x
  2. Step 2: Convert to fraction form
    99,449.75/137,240.66 = 54,737.75/x
  3. Step 3: Cross multiply
    99,449.75x = 137,240.66 × 54,737.75
  4. Step 4: Simplify right side
    99,449.75x = 7,512,244,663.23
  5. Step 5: Solve for x
    x = 7,512,244,663.23/99,449.75
  6. Step 6: Final answer
    x = 75,538.10

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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.