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Finding the Fourth Proportional to 132,986.32, 183,544.86 and 79,274.80

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Solution

The fourth proportional to 132,986.32, 183,544.86 and 79,274.80 is: 109,413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,986.32 : 183,544.86 = 79,274.80 : x
  2. Step 2: Convert to fraction form
    132,986.32/183,544.86 = 79,274.80/x
  3. Step 3: Cross multiply
    132,986.32x = 183,544.86 × 79,274.80
  4. Step 4: Simplify right side
    132,986.32x = 14,550,482,067.53
  5. Step 5: Solve for x
    x = 14,550,482,067.53/132,986.32
  6. Step 6: Final answer
    x = 109,413.37

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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.