Home / 127,993.24-191,989.80-68,747.40

Finding the Fourth Proportional to 127,993.24, 191,989.80 and 68,747.40

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Solution

The fourth proportional to 127,993.24, 191,989.80 and 68,747.40 is: 103,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,993.24 : 191,989.80 = 68,747.40 : x
  2. Step 2: Convert to fraction form
    127,993.24/191,989.80 = 68,747.40/x
  3. Step 3: Cross multiply
    127,993.24x = 191,989.80 × 68,747.40
  4. Step 4: Simplify right side
    127,993.24x = 13,198,799,576.52
  5. Step 5: Solve for x
    x = 13,198,799,576.52/127,993.24
  6. Step 6: Final answer
    x = 103,121.07

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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.