Home / 126,614.52-174,781.84-78,891.45

Finding the Fourth Proportional to 126,614.52, 174,781.84 and 78,891.45

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Solution

The fourth proportional to 126,614.52, 174,781.84 and 78,891.45 is: 108,903.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,614.52 : 174,781.84 = 78,891.45 : x
  2. Step 2: Convert to fraction form
    126,614.52/174,781.84 = 78,891.45/x
  3. Step 3: Cross multiply
    126,614.52x = 174,781.84 × 78,891.45
  4. Step 4: Simplify right side
    126,614.52x = 13,788,792,988.50
  5. Step 5: Solve for x
    x = 13,788,792,988.50/126,614.52
  6. Step 6: Final answer
    x = 108,903.72

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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.