Home / 126,244.38-174,280.38-78,513.11

Finding the Fourth Proportional to 126,244.38, 174,280.38 and 78,513.11

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Solution

The fourth proportional to 126,244.38, 174,280.38 and 78,513.11 is: 108,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,244.38 : 174,280.38 = 78,513.11 : x
  2. Step 2: Convert to fraction form
    126,244.38/174,280.38 = 78,513.11/x
  3. Step 3: Cross multiply
    126,244.38x = 174,280.38 × 78,513.11
  4. Step 4: Simplify right side
    126,244.38x = 13,683,294,645.78
  5. Step 5: Solve for x
    x = 13,683,294,645.78/126,244.38
  6. Step 6: Final answer
    x = 108,387.36

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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.