Home / 102,040.56-140,884.65-91,251.90

Finding the Fourth Proportional to 102,040.56, 140,884.65 and 91,251.90

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Solution

The fourth proportional to 102,040.56, 140,884.65 and 91,251.90 is: 125,989.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,040.56 : 140,884.65 = 91,251.90 : x
  2. Step 2: Convert to fraction form
    102,040.56/140,884.65 = 91,251.90/x
  3. Step 3: Cross multiply
    102,040.56x = 140,884.65 × 91,251.90
  4. Step 4: Simplify right side
    102,040.56x = 12,855,991,993.34
  5. Step 5: Solve for x
    x = 12,855,991,993.34/102,040.56
  6. Step 6: Final answer
    x = 125,989.04

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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.