Home / 141,990.38-195,945.63-78,330.86

Finding the Fourth Proportional to 141,990.38, 195,945.63 and 78,330.86

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Solution

The fourth proportional to 141,990.38, 195,945.63 and 78,330.86 is: 108,095.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,990.38 : 195,945.63 = 78,330.86 : x
  2. Step 2: Convert to fraction form
    141,990.38/195,945.63 = 78,330.86/x
  3. Step 3: Cross multiply
    141,990.38x = 195,945.63 × 78,330.86
  4. Step 4: Simplify right side
    141,990.38x = 15,348,589,711.14
  5. Step 5: Solve for x
    x = 15,348,589,711.14/141,990.38
  6. Step 6: Final answer
    x = 108,095.98

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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.