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Finding the Fourth Proportional to 118,691.35, 163,807.13 and 75,672.41

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Solution

The fourth proportional to 118,691.35, 163,807.13 and 75,672.41 is: 104,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,691.35 : 163,807.13 = 75,672.41 : x
  2. Step 2: Convert to fraction form
    118,691.35/163,807.13 = 75,672.41/x
  3. Step 3: Cross multiply
    118,691.35x = 163,807.13 × 75,672.41
  4. Step 4: Simplify right side
    118,691.35x = 12,395,679,672.43
  5. Step 5: Solve for x
    x = 12,395,679,672.43/118,691.35
  6. Step 6: Final answer
    x = 104,436.25

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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.