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Finding the Fourth Proportional to 132,369.80, 182,671.74 and 71,940.45

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Solution

The fourth proportional to 132,369.80, 182,671.74 and 71,940.45 is: 99,278.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,369.80 : 182,671.74 = 71,940.45 : x
  2. Step 2: Convert to fraction form
    132,369.80/182,671.74 = 71,940.45/x
  3. Step 3: Cross multiply
    132,369.80x = 182,671.74 × 71,940.45
  4. Step 4: Simplify right side
    132,369.80x = 13,141,486,633.04
  5. Step 5: Solve for x
    x = 13,141,486,633.04/132,369.80
  6. Step 6: Final answer
    x = 99,278.59

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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.