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Finding the Fourth Proportional to 128,262.17, 192,393.71 and 75,634.75

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Solution

The fourth proportional to 128,262.17, 192,393.71 and 75,634.75 is: 113,452.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262.17 : 192,393.71 = 75,634.75 : x
  2. Step 2: Convert to fraction form
    128,262.17/192,393.71 = 75,634.75/x
  3. Step 3: Cross multiply
    128,262.17x = 192,393.71 × 75,634.75
  4. Step 4: Simplify right side
    128,262.17x = 14,551,650,157.42
  5. Step 5: Solve for x
    x = 14,551,650,157.42/128,262.17
  6. Step 6: Final answer
    x = 113,452.39

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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.