Home / 140,918.13-194,475.33-80,507.72

Finding the Fourth Proportional to 140,918.13, 194,475.33 and 80,507.72

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Solution

The fourth proportional to 140,918.13, 194,475.33 and 80,507.72 is: 111,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,918.13 : 194,475.33 = 80,507.72 : x
  2. Step 2: Convert to fraction form
    140,918.13/194,475.33 = 80,507.72/x
  3. Step 3: Cross multiply
    140,918.13x = 194,475.33 × 80,507.72
  4. Step 4: Simplify right side
    140,918.13x = 15,656,765,900.74
  5. Step 5: Solve for x
    x = 15,656,765,900.74/140,918.13
  6. Step 6: Final answer
    x = 111,105.40

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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.