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Finding the Fourth Proportional to 101,781.17, 152,597.94 and 68,418.48

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Solution

The fourth proportional to 101,781.17, 152,597.94 and 68,418.48 is: 102,578.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,781.17 : 152,597.94 = 68,418.48 : x
  2. Step 2: Convert to fraction form
    101,781.17/152,597.94 = 68,418.48/x
  3. Step 3: Cross multiply
    101,781.17x = 152,597.94 × 68,418.48
  4. Step 4: Simplify right side
    101,781.17x = 10,440,519,806.46
  5. Step 5: Solve for x
    x = 10,440,519,806.46/101,781.17
  6. Step 6: Final answer
    x = 102,578.11

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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.