Home / 128,167.28-175,586.23-123,375.46

Finding the Fourth Proportional to 128,167.28, 175,586.23 and 123,375.46

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Solution

The fourth proportional to 128,167.28, 175,586.23 and 123,375.46 is: 169,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,167.28 : 175,586.23 = 123,375.46 : x
  2. Step 2: Convert to fraction form
    128,167.28/175,586.23 = 123,375.46/x
  3. Step 3: Cross multiply
    128,167.28x = 175,586.23 × 123,375.46
  4. Step 4: Simplify right side
    128,167.28x = 21,663,031,895.92
  5. Step 5: Solve for x
    x = 21,663,031,895.92/128,167.28
  6. Step 6: Final answer
    x = 169,021.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.