Home / 126,042.34-173,930.61-72,331.78

Finding the Fourth Proportional to 126,042.34, 173,930.61 and 72,331.78

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Solution

The fourth proportional to 126,042.34, 173,930.61 and 72,331.78 is: 99,813.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,042.34 : 173,930.61 = 72,331.78 : x
  2. Step 2: Convert to fraction form
    126,042.34/173,930.61 = 72,331.78/x
  3. Step 3: Cross multiply
    126,042.34x = 173,930.61 × 72,331.78
  4. Step 4: Simplify right side
    126,042.34x = 12,580,710,617.79
  5. Step 5: Solve for x
    x = 12,580,710,617.79/126,042.34
  6. Step 6: Final answer
    x = 99,813.37

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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.