Home / 126,343.68-189,301.36-76,318.72

Finding the Fourth Proportional to 126,343.68, 189,301.36 and 76,318.72

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Solution

The fourth proportional to 126,343.68, 189,301.36 and 76,318.72 is: 114,348.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,343.68 : 189,301.36 = 76,318.72 : x
  2. Step 2: Convert to fraction form
    126,343.68/189,301.36 = 76,318.72/x
  3. Step 3: Cross multiply
    126,343.68x = 189,301.36 × 76,318.72
  4. Step 4: Simplify right side
    126,343.68x = 14,447,237,489.46
  5. Step 5: Solve for x
    x = 14,447,237,489.46/126,343.68
  6. Step 6: Final answer
    x = 114,348.72

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1.5x scale

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.