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Finding the Fourth Proportional to 151,149.30, 227,133.15 and 81,078.90

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Solution

The fourth proportional to 151,149.30, 227,133.15 and 81,078.90 is: 121,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,149.30 : 227,133.15 = 81,078.90 : x
  2. Step 2: Convert to fraction form
    151,149.30/227,133.15 = 81,078.90/x
  3. Step 3: Cross multiply
    151,149.30x = 227,133.15 × 81,078.90
  4. Step 4: Simplify right side
    151,149.30x = 18,415,705,955.54
  5. Step 5: Solve for x
    x = 18,415,705,955.54/151,149.30
  6. Step 6: Final answer
    x = 121,837.85

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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.