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Finding the Fourth Proportional to 151,853.90, 227,780.85 and 68,747.90

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Solution

The fourth proportional to 151,853.90, 227,780.85 and 68,747.90 is: 103,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,853.90 : 227,780.85 = 68,747.90 : x
  2. Step 2: Convert to fraction form
    151,853.90/227,780.85 = 68,747.90/x
  3. Step 3: Cross multiply
    151,853.90x = 227,780.85 × 68,747.90
  4. Step 4: Simplify right side
    151,853.90x = 15,659,455,097.72
  5. Step 5: Solve for x
    x = 15,659,455,097.72/151,853.90
  6. Step 6: Final answer
    x = 103,121.85

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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.