Home / 123,938.20-185,648.10-68,469.40

Finding the Fourth Proportional to 123,938.20, 185,648.10 and 68,469.40

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Solution

The fourth proportional to 123,938.20, 185,648.10 and 68,469.40 is: 102,560.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,938.20 : 185,648.10 = 68,469.40 : x
  2. Step 2: Convert to fraction form
    123,938.20/185,648.10 = 68,469.40/x
  3. Step 3: Cross multiply
    123,938.20x = 185,648.10 × 68,469.40
  4. Step 4: Simplify right side
    123,938.20x = 12,711,214,018.14
  5. Step 5: Solve for x
    x = 12,711,214,018.14/123,938.20
  6. Step 6: Final answer
    x = 102,560.91

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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.