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Finding the Fourth Proportional to 138,613.95, 207,889.54 and 63,662.04

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Solution

The fourth proportional to 138,613.95, 207,889.54 and 63,662.04 is: 95,478.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,613.95 : 207,889.54 = 63,662.04 : x
  2. Step 2: Convert to fraction form
    138,613.95/207,889.54 = 63,662.04/x
  3. Step 3: Cross multiply
    138,613.95x = 207,889.54 × 63,662.04
  4. Step 4: Simplify right side
    138,613.95x = 13,234,672,211.06
  5. Step 5: Solve for x
    x = 13,234,672,211.06/138,613.95
  6. Step 6: Final answer
    x = 95,478.65

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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.