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Finding the Fourth Proportional to 138,316.52, 207,649.74 and 117,671.24

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Solution

The fourth proportional to 138,316.52, 207,649.74 and 117,671.24 is: 176,655.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,316.52 : 207,649.74 = 117,671.24 : x
  2. Step 2: Convert to fraction form
    138,316.52/207,649.74 = 117,671.24/x
  3. Step 3: Cross multiply
    138,316.52x = 207,649.74 × 117,671.24
  4. Step 4: Simplify right side
    138,316.52x = 24,434,402,391.48
  5. Step 5: Solve for x
    x = 24,434,402,391.48/138,316.52
  6. Step 6: Final answer
    x = 176,655.71

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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.