Home / 137,967.03-190,395.16-80,609.61

Finding the Fourth Proportional to 137,967.03, 190,395.16 and 80,609.61

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Solution

The fourth proportional to 137,967.03, 190,395.16 and 80,609.61 is: 111,241.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,967.03 : 190,395.16 = 80,609.61 : x
  2. Step 2: Convert to fraction form
    137,967.03/190,395.16 = 80,609.61/x
  3. Step 3: Cross multiply
    137,967.03x = 190,395.16 × 80,609.61
  4. Step 4: Simplify right side
    137,967.03x = 15,347,680,105.95
  5. Step 5: Solve for x
    x = 15,347,680,105.95/137,967.03
  6. Step 6: Final answer
    x = 111,241.65

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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.