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Finding the Fourth Proportional to 151,990.81, 227,990.10 and 72,010.04

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Solution

The fourth proportional to 151,990.81, 227,990.10 and 72,010.04 is: 108,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,990.81 : 227,990.10 = 72,010.04 : x
  2. Step 2: Convert to fraction form
    151,990.81/227,990.10 = 72,010.04/x
  3. Step 3: Cross multiply
    151,990.81x = 227,990.10 × 72,010.04
  4. Step 4: Simplify right side
    151,990.81x = 16,417,576,220.60
  5. Step 5: Solve for x
    x = 16,417,576,220.60/151,990.81
  6. Step 6: Final answer
    x = 108,016.90

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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.