Home / 129,660.68-194,491.20-85,484.72

Finding the Fourth Proportional to 129,660.68, 194,491.20 and 85,484.72

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Solution

The fourth proportional to 129,660.68, 194,491.20 and 85,484.72 is: 128,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,660.68 : 194,491.20 = 85,484.72 : x
  2. Step 2: Convert to fraction form
    129,660.68/194,491.20 = 85,484.72/x
  3. Step 3: Cross multiply
    129,660.68x = 194,491.20 × 85,484.72
  4. Step 4: Simplify right side
    129,660.68x = 16,626,025,774.46
  5. Step 5: Solve for x
    x = 16,626,025,774.46/129,660.68
  6. Step 6: Final answer
    x = 128,227.20

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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.