Home / 127,911.12-176,517.36-71,321.28

Finding the Fourth Proportional to 127,911.12, 176,517.36 and 71,321.28

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Solution

The fourth proportional to 127,911.12, 176,517.36 and 71,321.28 is: 98,423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,911.12 : 176,517.36 = 71,321.28 : x
  2. Step 2: Convert to fraction form
    127,911.12/176,517.36 = 71,321.28/x
  3. Step 3: Cross multiply
    127,911.12x = 176,517.36 × 71,321.28
  4. Step 4: Simplify right side
    127,911.12x = 12,589,444,057.42
  5. Step 5: Solve for x
    x = 12,589,444,057.42/127,911.12
  6. Step 6: Final answer
    x = 98,423.37

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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.