Home / 140,721.45-194,229.77-86,974.10

Finding the Fourth Proportional to 140,721.45, 194,229.77 and 86,974.10

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Solution

The fourth proportional to 140,721.45, 194,229.77 and 86,974.10 is: 120,045.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,721.45 : 194,229.77 = 86,974.10 : x
  2. Step 2: Convert to fraction form
    140,721.45/194,229.77 = 86,974.10/x
  3. Step 3: Cross multiply
    140,721.45x = 194,229.77 × 86,974.10
  4. Step 4: Simplify right side
    140,721.45x = 16,892,959,438.96
  5. Step 5: Solve for x
    x = 16,892,959,438.96/140,721.45
  6. Step 6: Final answer
    x = 120,045.38

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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.