Home / 128,649.28-192,979.32-35,154.76

Finding the Fourth Proportional to 128,649.28, 192,979.32 and 35,154.76

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Solution

The fourth proportional to 128,649.28, 192,979.32 and 35,154.76 is: 52,733.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,649.28 : 192,979.32 = 35,154.76 : x
  2. Step 2: Convert to fraction form
    128,649.28/192,979.32 = 35,154.76/x
  3. Step 3: Cross multiply
    128,649.28x = 192,979.32 × 35,154.76
  4. Step 4: Simplify right side
    128,649.28x = 6,784,141,679.56
  5. Step 5: Solve for x
    x = 6,784,141,679.56/128,649.28
  6. Step 6: Final answer
    x = 52,733.62

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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.