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Finding the Fourth Proportional to 136,243.38, 187,909.35 and 88,512.11

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Solution

The fourth proportional to 136,243.38, 187,909.35 and 88,512.11 is: 122,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,243.38 : 187,909.35 = 88,512.11 : x
  2. Step 2: Convert to fraction form
    136,243.38/187,909.35 = 88,512.11/x
  3. Step 3: Cross multiply
    136,243.38x = 187,909.35 × 88,512.11
  4. Step 4: Simplify right side
    136,243.38x = 16,632,252,117.68
  5. Step 5: Solve for x
    x = 16,632,252,117.68/136,243.38
  6. Step 6: Final answer
    x = 122,077.51

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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.