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Finding the Fourth Proportional to 94,559.80, 141,839.70 and 86,249.20

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Solution

The fourth proportional to 94,559.80, 141,839.70 and 86,249.20 is: 129,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,559.80 : 141,839.70 = 86,249.20 : x
  2. Step 2: Convert to fraction form
    94,559.80/141,839.70 = 86,249.20/x
  3. Step 3: Cross multiply
    94,559.80x = 141,839.70 × 86,249.20
  4. Step 4: Simplify right side
    94,559.80x = 12,233,560,653.24
  5. Step 5: Solve for x
    x = 12,233,560,653.24/94,559.80
  6. Step 6: Final answer
    x = 129,373.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.