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Finding the Fourth Proportional to 132,276, 182,540.88 and 72,660

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Solution

The fourth proportional to 132,276, 182,540.88 and 72,660 is: 100,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,276 : 182,540.88 = 72,660 : x
  2. Step 2: Convert to fraction form
    132,276/182,540.88 = 72,660/x
  3. Step 3: Cross multiply
    132,276x = 182,540.88 × 72,660
  4. Step 4: Simplify right side
    132,276x = 13,263,420,340.80
  5. Step 5: Solve for x
    x = 13,263,420,340.80/132,276
  6. Step 6: Final answer
    x = 100,270.80

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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.