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Finding the Fourth Proportional to 138,478.48, 207,634.62 and 63,504.71

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Solution

The fourth proportional to 138,478.48, 207,634.62 and 63,504.71 is: 95,218.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,478.48 : 207,634.62 = 63,504.71 : x
  2. Step 2: Convert to fraction form
    138,478.48/207,634.62 = 63,504.71/x
  3. Step 3: Cross multiply
    138,478.48x = 207,634.62 × 63,504.71
  4. Step 4: Simplify right side
    138,478.48x = 13,185,776,307.66
  5. Step 5: Solve for x
    x = 13,185,776,307.66/138,478.48
  6. Step 6: Final answer
    x = 95,218.96

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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.