Home / 82,243.20-123,364.82-19,913.70

Finding the Fourth Proportional to 82,243.20, 123,364.82 and 19,913.70

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Solution

The fourth proportional to 82,243.20, 123,364.82 and 19,913.70 is: 29,870.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,243.20 : 123,364.82 = 19,913.70 : x
  2. Step 2: Convert to fraction form
    82,243.20/123,364.82 = 19,913.70/x
  3. Step 3: Cross multiply
    82,243.20x = 123,364.82 × 19,913.70
  4. Step 4: Simplify right side
    82,243.20x = 2,456,650,016.03
  5. Step 5: Solve for x
    x = 2,456,650,016.03/82,243.20
  6. Step 6: Final answer
    x = 29,870.55

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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.