Home / 79,139.97-109,227.08-76,512.53

Finding the Fourth Proportional to 79,139.97, 109,227.08 and 76,512.53

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Solution

The fourth proportional to 79,139.97, 109,227.08 and 76,512.53 is: 105,600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.97 : 109,227.08 = 76,512.53 : x
  2. Step 2: Convert to fraction form
    79,139.97/109,227.08 = 76,512.53/x
  3. Step 3: Cross multiply
    79,139.97x = 109,227.08 × 76,512.53
  4. Step 4: Simplify right side
    79,139.97x = 8,357,240,699.66
  5. Step 5: Solve for x
    x = 8,357,240,699.66/79,139.97
  6. Step 6: Final answer
    x = 105,600.76

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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.