Home / 126,744.17-174,836.89-81,428.90

Finding the Fourth Proportional to 126,744.17, 174,836.89 and 81,428.90

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Solution

The fourth proportional to 126,744.17, 174,836.89 and 81,428.90 is: 112,326.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,744.17 : 174,836.89 = 81,428.90 : x
  2. Step 2: Convert to fraction form
    126,744.17/174,836.89 = 81,428.90/x
  3. Step 3: Cross multiply
    126,744.17x = 174,836.89 × 81,428.90
  4. Step 4: Simplify right side
    126,744.17x = 14,236,775,632.12
  5. Step 5: Solve for x
    x = 14,236,775,632.12/126,744.17
  6. Step 6: Final answer
    x = 112,326.87

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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.