Home / 141,471.92-195,236.82-77,815.64

Finding the Fourth Proportional to 141,471.92, 195,236.82 and 77,815.64

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Solution

The fourth proportional to 141,471.92, 195,236.82 and 77,815.64 is: 107,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,471.92 : 195,236.82 = 77,815.64 : x
  2. Step 2: Convert to fraction form
    141,471.92/195,236.82 = 77,815.64/x
  3. Step 3: Cross multiply
    141,471.92x = 195,236.82 × 77,815.64
  4. Step 4: Simplify right side
    141,471.92x = 15,192,478,099.86
  5. Step 5: Solve for x
    x = 15,192,478,099.86/141,471.92
  6. Step 6: Final answer
    x = 107,388.65

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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.