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Finding the Fourth Proportional to 129,341.73, 178,338.92 and 88,525.54

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Solution

The fourth proportional to 129,341.73, 178,338.92 and 88,525.54 is: 122,060.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,341.73 : 178,338.92 = 88,525.54 : x
  2. Step 2: Convert to fraction form
    129,341.73/178,338.92 = 88,525.54/x
  3. Step 3: Cross multiply
    129,341.73x = 178,338.92 × 88,525.54
  4. Step 4: Simplify right side
    129,341.73x = 15,787,548,976.31
  5. Step 5: Solve for x
    x = 15,787,548,976.31/129,341.73
  6. Step 6: Final answer
    x = 122,060.75

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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.