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Finding the Fourth Proportional to 118,711.35, 163,837.31 and 67,712.40

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Solution

The fourth proportional to 118,711.35, 163,837.31 and 67,712.40 is: 93,452.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,711.35 : 163,837.31 = 67,712.40 : x
  2. Step 2: Convert to fraction form
    118,711.35/163,837.31 = 67,712.40/x
  3. Step 3: Cross multiply
    118,711.35x = 163,837.31 × 67,712.40
  4. Step 4: Simplify right side
    118,711.35x = 11,093,817,469.64
  5. Step 5: Solve for x
    x = 11,093,817,469.64/118,711.35
  6. Step 6: Final answer
    x = 93,452.04

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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.