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Finding the Fourth Proportional to 101,894.76, 152,619.12 and 72,222.57

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Solution

The fourth proportional to 101,894.76, 152,619.12 and 72,222.57 is: 108,175.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,894.76 : 152,619.12 = 72,222.57 : x
  2. Step 2: Convert to fraction form
    101,894.76/152,619.12 = 72,222.57/x
  3. Step 3: Cross multiply
    101,894.76x = 152,619.12 × 72,222.57
  4. Step 4: Simplify right side
    101,894.76x = 11,022,545,077.54
  5. Step 5: Solve for x
    x = 11,022,545,077.54/101,894.76
  6. Step 6: Final answer
    x = 108,175.78

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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.