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Finding the Fourth Proportional to 111,864.66, 154,338.48 and 63,458.61

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Solution

The fourth proportional to 111,864.66, 154,338.48 and 63,458.61 is: 87,553.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,864.66 : 154,338.48 = 63,458.61 : x
  2. Step 2: Convert to fraction form
    111,864.66/154,338.48 = 63,458.61/x
  3. Step 3: Cross multiply
    111,864.66x = 154,338.48 × 63,458.61
  4. Step 4: Simplify right side
    111,864.66x = 9,794,105,410.31
  5. Step 5: Solve for x
    x = 9,794,105,410.31/111,864.66
  6. Step 6: Final answer
    x = 87,553.17

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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.