Home / 129,175.12-178,262.61-71,032.87

Finding the Fourth Proportional to 129,175.12, 178,262.61 and 71,032.87

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Solution

The fourth proportional to 129,175.12, 178,262.61 and 71,032.87 is: 98,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,175.12 : 178,262.61 = 71,032.87 : x
  2. Step 2: Convert to fraction form
    129,175.12/178,262.61 = 71,032.87/x
  3. Step 3: Cross multiply
    129,175.12x = 178,262.61 × 71,032.87
  4. Step 4: Simplify right side
    129,175.12x = 12,662,504,801.99
  5. Step 5: Solve for x
    x = 12,662,504,801.99/129,175.12
  6. Step 6: Final answer
    x = 98,025.88

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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.