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Finding the Fourth Proportional to 151,415.80, 227,123.70 and 72,489.40

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Solution

The fourth proportional to 151,415.80, 227,123.70 and 72,489.40 is: 108,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,415.80 : 227,123.70 = 72,489.40 : x
  2. Step 2: Convert to fraction form
    151,415.80/227,123.70 = 72,489.40/x
  3. Step 3: Cross multiply
    151,415.80x = 227,123.70 × 72,489.40
  4. Step 4: Simplify right side
    151,415.80x = 16,464,060,738.78
  5. Step 5: Solve for x
    x = 16,464,060,738.78/151,415.80
  6. Step 6: Final answer
    x = 108,734.10

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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.