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Finding the Fourth Proportional to 151,405.80, 227,108.70 and 72,479.40

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Solution

The fourth proportional to 151,405.80, 227,108.70 and 72,479.40 is: 108,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,405.80 : 227,108.70 = 72,479.40 : x
  2. Step 2: Convert to fraction form
    151,405.80/227,108.70 = 72,479.40/x
  3. Step 3: Cross multiply
    151,405.80x = 227,108.70 × 72,479.40
  4. Step 4: Simplify right side
    151,405.80x = 16,460,702,310.78
  5. Step 5: Solve for x
    x = 16,460,702,310.78/151,405.80
  6. Step 6: Final answer
    x = 108,719.10

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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.