Home / 127,738.26-176,278.68-71,149.50

Finding the Fourth Proportional to 127,738.26, 176,278.68 and 71,149.50

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Solution

The fourth proportional to 127,738.26, 176,278.68 and 71,149.50 is: 98,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,738.26 : 176,278.68 = 71,149.50 : x
  2. Step 2: Convert to fraction form
    127,738.26/176,278.68 = 71,149.50/x
  3. Step 3: Cross multiply
    127,738.26x = 176,278.68 × 71,149.50
  4. Step 4: Simplify right side
    127,738.26x = 12,542,139,942.66
  5. Step 5: Solve for x
    x = 12,542,139,942.66/127,738.26
  6. Step 6: Final answer
    x = 98,186.24

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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.