Home / 68,144.10-102,220.46-21,398.82

Finding the Fourth Proportional to 68,144.10, 102,220.46 and 21,398.82

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Solution

The fourth proportional to 68,144.10, 102,220.46 and 21,398.82 is: 32,099.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,144.10 : 102,220.46 = 21,398.82 : x
  2. Step 2: Convert to fraction form
    68,144.10/102,220.46 = 21,398.82/x
  3. Step 3: Cross multiply
    68,144.10x = 102,220.46 × 21,398.82
  4. Step 4: Simplify right side
    68,144.10x = 2,187,397,223.86
  5. Step 5: Solve for x
    x = 2,187,397,223.86/68,144.10
  6. Step 6: Final answer
    x = 32,099.58

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1.5x scale

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.