Home / 112,219.38-154,865.99-61,921.62

Finding the Fourth Proportional to 112,219.38, 154,865.99 and 61,921.62

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Solution

The fourth proportional to 112,219.38, 154,865.99 and 61,921.62 is: 85,453.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,219.38 : 154,865.99 = 61,921.62 : x
  2. Step 2: Convert to fraction form
    112,219.38/154,865.99 = 61,921.62/x
  3. Step 3: Cross multiply
    112,219.38x = 154,865.99 × 61,921.62
  4. Step 4: Simplify right side
    112,219.38x = 9,589,552,983.70
  5. Step 5: Solve for x
    x = 9,589,552,983.70/112,219.38
  6. Step 6: Final answer
    x = 85,453.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.