Home / 126,389.59-189,642.98-55,302.85

Finding the Fourth Proportional to 126,389.59, 189,642.98 and 55,302.85

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Solution

The fourth proportional to 126,389.59, 189,642.98 and 55,302.85 is: 82,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,389.59 : 189,642.98 = 55,302.85 : x
  2. Step 2: Convert to fraction form
    126,389.59/189,642.98 = 55,302.85/x
  3. Step 3: Cross multiply
    126,389.59x = 189,642.98 × 55,302.85
  4. Step 4: Simplify right side
    126,389.59x = 10,487,797,276.49
  5. Step 5: Solve for x
    x = 10,487,797,276.49/126,389.59
  6. Step 6: Final answer
    x = 82,979.91

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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.