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Finding the Fourth Proportional to 154,540.60, 231,810.90 and 71,434.60

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Solution

The fourth proportional to 154,540.60, 231,810.90 and 71,434.60 is: 107,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,540.60 : 231,810.90 = 71,434.60 : x
  2. Step 2: Convert to fraction form
    154,540.60/231,810.90 = 71,434.60/x
  3. Step 3: Cross multiply
    154,540.60x = 231,810.90 × 71,434.60
  4. Step 4: Simplify right side
    154,540.60x = 16,559,318,917.14
  5. Step 5: Solve for x
    x = 16,559,318,917.14/154,540.60
  6. Step 6: Final answer
    x = 107,151.90

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1.5x scale

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.