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Finding the Fourth Proportional to 151,447.80, 227,171.70 and 72,521.40

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Solution

The fourth proportional to 151,447.80, 227,171.70 and 72,521.40 is: 108,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,447.80 : 227,171.70 = 72,521.40 : x
  2. Step 2: Convert to fraction form
    151,447.80/227,171.70 = 72,521.40/x
  3. Step 3: Cross multiply
    151,447.80x = 227,171.70 × 72,521.40
  4. Step 4: Simplify right side
    151,447.80x = 16,474,809,724.38
  5. Step 5: Solve for x
    x = 16,474,809,724.38/151,447.80
  6. Step 6: Final answer
    x = 108,782.10

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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.