Home / 124,739.17-172,091.19-76,909.48

Finding the Fourth Proportional to 124,739.17, 172,091.19 and 76,909.48

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Solution

The fourth proportional to 124,739.17, 172,091.19 and 76,909.48 is: 106,104.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,739.17 : 172,091.19 = 76,909.48 : x
  2. Step 2: Convert to fraction form
    124,739.17/172,091.19 = 76,909.48/x
  3. Step 3: Cross multiply
    124,739.17x = 172,091.19 × 76,909.48
  4. Step 4: Simplify right side
    124,739.17x = 13,235,443,935.48
  5. Step 5: Solve for x
    x = 13,235,443,935.48/124,739.17
  6. Step 6: Final answer
    x = 106,104.95

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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.