Home / 140,638.75-194,077.62-80,208.02

Finding the Fourth Proportional to 140,638.75, 194,077.62 and 80,208.02

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Solution

The fourth proportional to 140,638.75, 194,077.62 and 80,208.02 is: 110,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,638.75 : 194,077.62 = 80,208.02 : x
  2. Step 2: Convert to fraction form
    140,638.75/194,077.62 = 80,208.02/x
  3. Step 3: Cross multiply
    140,638.75x = 194,077.62 × 80,208.02
  4. Step 4: Simplify right side
    140,638.75x = 15,566,582,111.71
  5. Step 5: Solve for x
    x = 15,566,582,111.71/140,638.75
  6. Step 6: Final answer
    x = 110,684.87

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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.