Home / 129,166.28-178,251.62-71,025.48

Finding the Fourth Proportional to 129,166.28, 178,251.62 and 71,025.48

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Solution

The fourth proportional to 129,166.28, 178,251.62 and 71,025.48 is: 98,016.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,166.28 : 178,251.62 = 71,025.48 : x
  2. Step 2: Convert to fraction form
    129,166.28/178,251.62 = 71,025.48/x
  3. Step 3: Cross multiply
    129,166.28x = 178,251.62 × 71,025.48
  4. Step 4: Simplify right side
    129,166.28x = 12,660,406,871.28
  5. Step 5: Solve for x
    x = 12,660,406,871.28/129,166.28
  6. Step 6: Final answer
    x = 98,016.35

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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.