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Finding the Fourth Proportional to 154,071.80, 231,107.70 and 54,231.20

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Solution

The fourth proportional to 154,071.80, 231,107.70 and 54,231.20 is: 81,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,071.80 : 231,107.70 = 54,231.20 : x
  2. Step 2: Convert to fraction form
    154,071.80/231,107.70 = 54,231.20/x
  3. Step 3: Cross multiply
    154,071.80x = 231,107.70 × 54,231.20
  4. Step 4: Simplify right side
    154,071.80x = 12,533,247,900.24
  5. Step 5: Solve for x
    x = 12,533,247,900.24/154,071.80
  6. Step 6: Final answer
    x = 81,346.80

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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.