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Finding the Fourth Proportional to 118,818.70, 178,209.41 and 38,855.97

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Solution

The fourth proportional to 118,818.70, 178,209.41 and 38,855.97 is: 58,277.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,818.70 : 178,209.41 = 38,855.97 : x
  2. Step 2: Convert to fraction form
    118,818.70/178,209.41 = 38,855.97/x
  3. Step 3: Cross multiply
    118,818.70x = 178,209.41 × 38,855.97
  4. Step 4: Simplify right side
    118,818.70x = 6,924,499,294.40
  5. Step 5: Solve for x
    x = 6,924,499,294.40/118,818.70
  6. Step 6: Final answer
    x = 58,277.86

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1.5x scale

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.