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Finding the Fourth Proportional to 128,892.60, 193,443.12 and 88,887.24

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Solution

The fourth proportional to 128,892.60, 193,443.12 and 88,887.24 is: 133,402.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,892.60 : 193,443.12 = 88,887.24 : x
  2. Step 2: Convert to fraction form
    128,892.60/193,443.12 = 88,887.24/x
  3. Step 3: Cross multiply
    128,892.60x = 193,443.12 × 88,887.24
  4. Step 4: Simplify right side
    128,892.60x = 17,194,625,033.79
  5. Step 5: Solve for x
    x = 17,194,625,033.79/128,892.60
  6. Step 6: Final answer
    x = 133,402.73

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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.