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Finding the Fourth Proportional to 136,694.34, 188,715.69 and 88,923.78

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Solution

The fourth proportional to 136,694.34, 188,715.69 and 88,923.78 is: 122,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,694.34 : 188,715.69 = 88,923.78 : x
  2. Step 2: Convert to fraction form
    136,694.34/188,715.69 = 88,923.78/x
  3. Step 3: Cross multiply
    136,694.34x = 188,715.69 × 88,923.78
  4. Step 4: Simplify right side
    136,694.34x = 16,781,312,500.11
  5. Step 5: Solve for x
    x = 16,781,312,500.11/136,694.34
  6. Step 6: Final answer
    x = 122,765.23

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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.