Home / 102,305.88-141,144.66-61,990.56

Finding the Fourth Proportional to 102,305.88, 141,144.66 and 61,990.56

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Solution

The fourth proportional to 102,305.88, 141,144.66 and 61,990.56 is: 85,524.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,305.88 : 141,144.66 = 61,990.56 : x
  2. Step 2: Convert to fraction form
    102,305.88/141,144.66 = 61,990.56/x
  3. Step 3: Cross multiply
    102,305.88x = 141,144.66 × 61,990.56
  4. Step 4: Simplify right side
    102,305.88x = 8,749,636,514.41
  5. Step 5: Solve for x
    x = 8,749,636,514.41/102,305.88
  6. Step 6: Final answer
    x = 85,524.28

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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.