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Finding the Fourth Proportional to 132,660.88, 183,067.80 and 78,933.60

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Solution

The fourth proportional to 132,660.88, 183,067.80 and 78,933.60 is: 108,925.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,660.88 : 183,067.80 = 78,933.60 : x
  2. Step 2: Convert to fraction form
    132,660.88/183,067.80 = 78,933.60/x
  3. Step 3: Cross multiply
    132,660.88x = 183,067.80 × 78,933.60
  4. Step 4: Simplify right side
    132,660.88x = 14,450,200,498.08
  5. Step 5: Solve for x
    x = 14,450,200,498.08/132,660.88
  6. Step 6: Final answer
    x = 108,925.86

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1.5x scale

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.