Home / 103,486.46-155,233.13-80,976.38

Finding the Fourth Proportional to 103,486.46, 155,233.13 and 80,976.38

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Solution

The fourth proportional to 103,486.46, 155,233.13 and 80,976.38 is: 121,467.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,486.46 : 155,233.13 = 80,976.38 : x
  2. Step 2: Convert to fraction form
    103,486.46/155,233.13 = 80,976.38/x
  3. Step 3: Cross multiply
    103,486.46x = 155,233.13 × 80,976.38
  4. Step 4: Simplify right side
    103,486.46x = 12,570,215,742.42
  5. Step 5: Solve for x
    x = 12,570,215,742.42/103,486.46
  6. Step 6: Final answer
    x = 121,467.26

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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.