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Finding the Fourth Proportional to 111,645.54, 154,006.11 and 73,411.92

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Solution

The fourth proportional to 111,645.54, 154,006.11 and 73,411.92 is: 101,265.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,645.54 : 154,006.11 = 73,411.92 : x
  2. Step 2: Convert to fraction form
    111,645.54/154,006.11 = 73,411.92/x
  3. Step 3: Cross multiply
    111,645.54x = 154,006.11 × 73,411.92
  4. Step 4: Simplify right side
    111,645.54x = 11,305,884,226.83
  5. Step 5: Solve for x
    x = 11,305,884,226.83/111,645.54
  6. Step 6: Final answer
    x = 101,265.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.