Home / 141,920.76-195,851.98-78,260.84

Finding the Fourth Proportional to 141,920.76, 195,851.98 and 78,260.84

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Solution

The fourth proportional to 141,920.76, 195,851.98 and 78,260.84 is: 108,000.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,920.76 : 195,851.98 = 78,260.84 : x
  2. Step 2: Convert to fraction form
    141,920.76/195,851.98 = 78,260.84/x
  3. Step 3: Cross multiply
    141,920.76x = 195,851.98 × 78,260.84
  4. Step 4: Simplify right side
    141,920.76x = 15,327,540,470.46
  5. Step 5: Solve for x
    x = 15,327,540,470.46/141,920.76
  6. Step 6: Final answer
    x = 108,000.69

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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.