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Finding the Fourth Proportional to 98,180.70, 135,489.96 and 55,160.52

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Solution

The fourth proportional to 98,180.70, 135,489.96 and 55,160.52 is: 76,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,180.70 : 135,489.96 = 55,160.52 : x
  2. Step 2: Convert to fraction form
    98,180.70/135,489.96 = 55,160.52/x
  3. Step 3: Cross multiply
    98,180.70x = 135,489.96 × 55,160.52
  4. Step 4: Simplify right side
    98,180.70x = 7,473,696,648.38
  5. Step 5: Solve for x
    x = 7,473,696,648.38/98,180.70
  6. Step 6: Final answer
    x = 76,121.85

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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.