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Finding the Fourth Proportional to 126,842.94, 175,042.92 and 73,127.70

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Solution

The fourth proportional to 126,842.94, 175,042.92 and 73,127.70 is: 100,916.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,842.94 : 175,042.92 = 73,127.70 : x
  2. Step 2: Convert to fraction form
    126,842.94/175,042.92 = 73,127.70/x
  3. Step 3: Cross multiply
    126,842.94x = 175,042.92 × 73,127.70
  4. Step 4: Simplify right side
    126,842.94x = 12,800,486,140.88
  5. Step 5: Solve for x
    x = 12,800,486,140.88/126,842.94
  6. Step 6: Final answer
    x = 100,916.03

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1.5x scale

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.