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Finding the Fourth Proportional to 126,372.64, 174,394.20 and 72,668.20

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Solution

The fourth proportional to 126,372.64, 174,394.20 and 72,668.20 is: 100,282.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,372.64 : 174,394.20 = 72,668.20 : x
  2. Step 2: Convert to fraction form
    126,372.64/174,394.20 = 72,668.20/x
  3. Step 3: Cross multiply
    126,372.64x = 174,394.20 × 72,668.20
  4. Step 4: Simplify right side
    126,372.64x = 12,672,912,604.44
  5. Step 5: Solve for x
    x = 12,672,912,604.44/126,372.64
  6. Step 6: Final answer
    x = 100,282.09

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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.