Home / 126,588.72-189,911.88-67,393.20

Finding the Fourth Proportional to 126,588.72, 189,911.88 and 67,393.20

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Solution

The fourth proportional to 126,588.72, 189,911.88 and 67,393.20 is: 101,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,588.72 : 189,911.88 = 67,393.20 : x
  2. Step 2: Convert to fraction form
    126,588.72/189,911.88 = 67,393.20/x
  3. Step 3: Cross multiply
    126,588.72x = 189,911.88 × 67,393.20
  4. Step 4: Simplify right side
    126,588.72x = 12,798,769,311.22
  5. Step 5: Solve for x
    x = 12,798,769,311.22/126,588.72
  6. Step 6: Final answer
    x = 101,105.13

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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.