Home / 147,665.10-221,562.45-68,738.70

Finding the Fourth Proportional to 147,665.10, 221,562.45 and 68,738.70

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Solution

The fourth proportional to 147,665.10, 221,562.45 and 68,738.70 is: 103,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,665.10 : 221,562.45 = 68,738.70 : x
  2. Step 2: Convert to fraction form
    147,665.10/221,562.45 = 68,738.70/x
  3. Step 3: Cross multiply
    147,665.10x = 221,562.45 × 68,738.70
  4. Step 4: Simplify right side
    147,665.10x = 15,229,914,781.82
  5. Step 5: Solve for x
    x = 15,229,914,781.82/147,665.10
  6. Step 6: Final answer
    x = 103,138.21

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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.