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Finding the Fourth Proportional to 118,387.80, 163,373.04 and 64,671.39

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Solution

The fourth proportional to 118,387.80, 163,373.04 and 64,671.39 is: 89,245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,387.80 : 163,373.04 = 64,671.39 : x
  2. Step 2: Convert to fraction form
    118,387.80/163,373.04 = 64,671.39/x
  3. Step 3: Cross multiply
    118,387.80x = 163,373.04 × 64,671.39
  4. Step 4: Simplify right side
    118,387.80x = 10,565,561,585.33
  5. Step 5: Solve for x
    x = 10,565,561,585.33/118,387.80
  6. Step 6: Final answer
    x = 89,245.36

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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.