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Finding the Fourth Proportional to 136,884.52, 188,895 and 76,454.88

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Solution

The fourth proportional to 136,884.52, 188,895 and 76,454.88 is: 105,504.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,884.52 : 188,895 = 76,454.88 : x
  2. Step 2: Convert to fraction form
    136,884.52/188,895 = 76,454.88/x
  3. Step 3: Cross multiply
    136,884.52x = 188,895 × 76,454.88
  4. Step 4: Simplify right side
    136,884.52x = 14,441,944,557.60
  5. Step 5: Solve for x
    x = 14,441,944,557.60/136,884.52
  6. Step 6: Final answer
    x = 105,504.59

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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.