Home / 68,092.18-102,138.30-20,707.18

Finding the Fourth Proportional to 68,092.18, 102,138.30 and 20,707.18

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Solution

The fourth proportional to 68,092.18, 102,138.30 and 20,707.18 is: 31,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,092.18 : 102,138.30 = 20,707.18 : x
  2. Step 2: Convert to fraction form
    68,092.18/102,138.30 = 20,707.18/x
  3. Step 3: Cross multiply
    68,092.18x = 102,138.30 × 20,707.18
  4. Step 4: Simplify right side
    68,092.18x = 2,114,996,162.99
  5. Step 5: Solve for x
    x = 2,114,996,162.99/68,092.18
  6. Step 6: Final answer
    x = 31,060.78

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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.