Home / 141,788.79-195,677.27-78,126.57

Finding the Fourth Proportional to 141,788.79, 195,677.27 and 78,126.57

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Solution

The fourth proportional to 141,788.79, 195,677.27 and 78,126.57 is: 107,819.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,788.79 : 195,677.27 = 78,126.57 : x
  2. Step 2: Convert to fraction form
    141,788.79/195,677.27 = 78,126.57/x
  3. Step 3: Cross multiply
    141,788.79x = 195,677.27 × 78,126.57
  4. Step 4: Simplify right side
    141,788.79x = 15,287,593,932.06
  5. Step 5: Solve for x
    x = 15,287,593,932.06/141,788.79
  6. Step 6: Final answer
    x = 107,819.48

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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.