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Finding the Fourth Proportional to 126,357.38, 174,300.09 and 81,645.38

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Solution

The fourth proportional to 126,357.38, 174,300.09 and 81,645.38 is: 112,623.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,357.38 : 174,300.09 = 81,645.38 : x
  2. Step 2: Convert to fraction form
    126,357.38/174,300.09 = 81,645.38/x
  3. Step 3: Cross multiply
    126,357.38x = 174,300.09 × 81,645.38
  4. Step 4: Simplify right side
    126,357.38x = 14,230,797,082.08
  5. Step 5: Solve for x
    x = 14,230,797,082.08/126,357.38
  6. Step 6: Final answer
    x = 112,623.39

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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.