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Finding the Fourth Proportional to 126,042.84, 188,867.26 and 79,197.30

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Solution

The fourth proportional to 126,042.84, 188,867.26 and 79,197.30 is: 118,672.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,042.84 : 188,867.26 = 79,197.30 : x
  2. Step 2: Convert to fraction form
    126,042.84/188,867.26 = 79,197.30/x
  3. Step 3: Cross multiply
    126,042.84x = 188,867.26 × 79,197.30
  4. Step 4: Simplify right side
    126,042.84x = 14,957,777,050.40
  5. Step 5: Solve for x
    x = 14,957,777,050.40/126,042.84
  6. Step 6: Final answer
    x = 118,672.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.