Home / 141,999.42-195,959.86-78,337.20

Finding the Fourth Proportional to 141,999.42, 195,959.86 and 78,337.20

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Solution

The fourth proportional to 141,999.42, 195,959.86 and 78,337.20 is: 108,105.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,999.42 : 195,959.86 = 78,337.20 : x
  2. Step 2: Convert to fraction form
    141,999.42/195,959.86 = 78,337.20/x
  3. Step 3: Cross multiply
    141,999.42x = 195,959.86 × 78,337.20
  4. Step 4: Simplify right side
    141,999.42x = 15,350,946,744.79
  5. Step 5: Solve for x
    x = 15,350,946,744.79/141,999.42
  6. Step 6: Final answer
    x = 108,105.70

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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.