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Finding the Fourth Proportional to 128,253.60, 192,289.32 and 92,251.44

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Solution

The fourth proportional to 128,253.60, 192,289.32 and 92,251.44 is: 138,311.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,253.60 : 192,289.32 = 92,251.44 : x
  2. Step 2: Convert to fraction form
    128,253.60/192,289.32 = 92,251.44/x
  3. Step 3: Cross multiply
    128,253.60x = 192,289.32 × 92,251.44
  4. Step 4: Simplify right side
    128,253.60x = 17,738,966,666.62
  5. Step 5: Solve for x
    x = 17,738,966,666.62/128,253.60
  6. Step 6: Final answer
    x = 138,311.65

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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.