Home / 141,679.56-195,517.80-78,017.21

Finding the Fourth Proportional to 141,679.56, 195,517.80 and 78,017.21

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Solution

The fourth proportional to 141,679.56, 195,517.80 and 78,017.21 is: 107,663.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,679.56 : 195,517.80 = 78,017.21 : x
  2. Step 2: Convert to fraction form
    141,679.56/195,517.80 = 78,017.21/x
  3. Step 3: Cross multiply
    141,679.56x = 195,517.80 × 78,017.21
  4. Step 4: Simplify right side
    141,679.56x = 15,253,753,261.34
  5. Step 5: Solve for x
    x = 15,253,753,261.34/141,679.56
  6. Step 6: Final answer
    x = 107,663.75

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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.