Home / 128,251.96-192,274.17-53,428.31

Finding the Fourth Proportional to 128,251.96, 192,274.17 and 53,428.31

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Solution

The fourth proportional to 128,251.96, 192,274.17 and 53,428.31 is: 80,099.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,251.96 : 192,274.17 = 53,428.31 : x
  2. Step 2: Convert to fraction form
    128,251.96/192,274.17 = 53,428.31/x
  3. Step 3: Cross multiply
    128,251.96x = 192,274.17 × 53,428.31
  4. Step 4: Simplify right side
    128,251.96x = 10,272,883,959.75
  5. Step 5: Solve for x
    x = 10,272,883,959.75/128,251.96
  6. Step 6: Final answer
    x = 80,099.24

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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.