Home / 154,428.94-231,690.45-75,531.70

Finding the Fourth Proportional to 154,428.94, 231,690.45 and 75,531.70

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Solution

The fourth proportional to 154,428.94, 231,690.45 and 75,531.70 is: 113,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,428.94 : 231,690.45 = 75,531.70 : x
  2. Step 2: Convert to fraction form
    154,428.94/231,690.45 = 75,531.70/x
  3. Step 3: Cross multiply
    154,428.94x = 231,690.45 × 75,531.70
  4. Step 4: Simplify right side
    154,428.94x = 17,499,973,562.27
  5. Step 5: Solve for x
    x = 17,499,973,562.27/154,428.94
  6. Step 6: Final answer
    x = 113,320.56

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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.