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Finding the Fourth Proportional to 100,166.88, 150,028.80 and 68,501.88

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Solution

The fourth proportional to 100,166.88, 150,028.80 and 68,501.88 is: 102,601.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,166.88 : 150,028.80 = 68,501.88 : x
  2. Step 2: Convert to fraction form
    100,166.88/150,028.80 = 68,501.88/x
  3. Step 3: Cross multiply
    100,166.88x = 150,028.80 × 68,501.88
  4. Step 4: Simplify right side
    100,166.88x = 10,277,254,854.14
  5. Step 5: Solve for x
    x = 10,277,254,854.14/100,166.88
  6. Step 6: Final answer
    x = 102,601.33

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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.