Home / 141,699.06-195,542.34-78,042.78

Finding the Fourth Proportional to 141,699.06, 195,542.34 and 78,042.78

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Solution

The fourth proportional to 141,699.06, 195,542.34 and 78,042.78 is: 107,697.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,699.06 : 195,542.34 = 78,042.78 : x
  2. Step 2: Convert to fraction form
    141,699.06/195,542.34 = 78,042.78/x
  3. Step 3: Cross multiply
    141,699.06x = 195,542.34 × 78,042.78
  4. Step 4: Simplify right side
    141,699.06x = 15,260,667,821.31
  5. Step 5: Solve for x
    x = 15,260,667,821.31/141,699.06
  6. Step 6: Final answer
    x = 107,697.74

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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.