Home / 154,486.40-231,729.60-71,542.40

Finding the Fourth Proportional to 154,486.40, 231,729.60 and 71,542.40

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Solution

The fourth proportional to 154,486.40, 231,729.60 and 71,542.40 is: 107,313.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,486.40 : 231,729.60 = 71,542.40 : x
  2. Step 2: Convert to fraction form
    154,486.40/231,729.60 = 71,542.40/x
  3. Step 3: Cross multiply
    154,486.40x = 231,729.60 × 71,542.40
  4. Step 4: Simplify right side
    154,486.40x = 16,578,491,735.04
  5. Step 5: Solve for x
    x = 16,578,491,735.04/154,486.40
  6. Step 6: Final answer
    x = 107,313.60

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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.