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Finding the Fourth Proportional to 138,613.44, 207,888.80 and 63,661.54

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Solution

The fourth proportional to 138,613.44, 207,888.80 and 63,661.54 is: 95,477.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,613.44 : 207,888.80 = 63,661.54 : x
  2. Step 2: Convert to fraction form
    138,613.44/207,888.80 = 63,661.54/x
  3. Step 3: Cross multiply
    138,613.44x = 207,888.80 × 63,661.54
  4. Step 4: Simplify right side
    138,613.44x = 13,234,521,156.75
  5. Step 5: Solve for x
    x = 13,234,521,156.75/138,613.44
  6. Step 6: Final answer
    x = 95,477.91

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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.