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Finding the Fourth Proportional to 118,387.62, 163,373.96 and 64,672.66

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Solution

The fourth proportional to 118,387.62, 163,373.96 and 64,672.66 is: 89,247.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,387.62 : 163,373.96 = 64,672.66 : x
  2. Step 2: Convert to fraction form
    118,387.62/163,373.96 = 64,672.66/x
  3. Step 3: Cross multiply
    118,387.62x = 163,373.96 × 64,672.66
  4. Step 4: Simplify right side
    118,387.62x = 10,565,828,567.93
  5. Step 5: Solve for x
    x = 10,565,828,567.93/118,387.62
  6. Step 6: Final answer
    x = 89,247.75

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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.