Home / 154,560.30-231,710.85-80,688.30

Finding the Fourth Proportional to 154,560.30, 231,710.85 and 80,688.30

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Solution

The fourth proportional to 154,560.30, 231,710.85 and 80,688.30 is: 120,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,560.30 : 231,710.85 = 80,688.30 : x
  2. Step 2: Convert to fraction form
    154,560.30/231,710.85 = 80,688.30/x
  3. Step 3: Cross multiply
    154,560.30x = 231,710.85 × 80,688.30
  4. Step 4: Simplify right side
    154,560.30x = 18,696,354,578.06
  5. Step 5: Solve for x
    x = 18,696,354,578.06/154,560.30
  6. Step 6: Final answer
    x = 120,964.79

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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.