Home / 127,761.12-176,308.02-71,171.28

Finding the Fourth Proportional to 127,761.12, 176,308.02 and 71,171.28

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Solution

The fourth proportional to 127,761.12, 176,308.02 and 71,171.28 is: 98,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,761.12 : 176,308.02 = 71,171.28 : x
  2. Step 2: Convert to fraction form
    127,761.12/176,308.02 = 71,171.28/x
  3. Step 3: Cross multiply
    127,761.12x = 176,308.02 × 71,171.28
  4. Step 4: Simplify right side
    127,761.12x = 12,548,067,457.67
  5. Step 5: Solve for x
    x = 12,548,067,457.67/127,761.12
  6. Step 6: Final answer
    x = 98,215.07

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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.