Home / 141,788.29-195,676.58-78,126.07

Finding the Fourth Proportional to 141,788.29, 195,676.58 and 78,126.07

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Solution

The fourth proportional to 141,788.29, 195,676.58 and 78,126.07 is: 107,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,788.29 : 195,676.58 = 78,126.07 : x
  2. Step 2: Convert to fraction form
    141,788.29/195,676.58 = 78,126.07/x
  3. Step 3: Cross multiply
    141,788.29x = 195,676.58 × 78,126.07
  4. Step 4: Simplify right side
    141,788.29x = 15,287,442,186.44
  5. Step 5: Solve for x
    x = 15,287,442,186.44/141,788.29
  6. Step 6: Final answer
    x = 107,818.79

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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.