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Finding the Fourth Proportional to 126,574.40, 189,910.20 and 124,581.80

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Solution

The fourth proportional to 126,574.40, 189,910.20 and 124,581.80 is: 186,920.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,574.40 : 189,910.20 = 124,581.80 : x
  2. Step 2: Convert to fraction form
    126,574.40/189,910.20 = 124,581.80/x
  3. Step 3: Cross multiply
    126,574.40x = 189,910.20 × 124,581.80
  4. Step 4: Simplify right side
    126,574.40x = 23,659,354,554.36
  5. Step 5: Solve for x
    x = 23,659,354,554.36/126,574.40
  6. Step 6: Final answer
    x = 186,920.53

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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.