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Finding the Fourth Proportional to 111,855.66, 154,326.06 and 63,449.61

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Solution

The fourth proportional to 111,855.66, 154,326.06 and 63,449.61 is: 87,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,855.66 : 154,326.06 = 63,449.61 : x
  2. Step 2: Convert to fraction form
    111,855.66/154,326.06 = 63,449.61/x
  3. Step 3: Cross multiply
    111,855.66x = 154,326.06 × 63,449.61
  4. Step 4: Simplify right side
    111,855.66x = 9,791,928,319.84
  5. Step 5: Solve for x
    x = 9,791,928,319.84/111,855.66
  6. Step 6: Final answer
    x = 87,540.75

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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.