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Finding the Fourth Proportional to 132,697.88, 183,123.60 and 78,982.64

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Solution

The fourth proportional to 132,697.88, 183,123.60 and 78,982.64 is: 108,996.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,697.88 : 183,123.60 = 78,982.64 : x
  2. Step 2: Convert to fraction form
    132,697.88/183,123.60 = 78,982.64/x
  3. Step 3: Cross multiply
    132,697.88x = 183,123.60 × 78,982.64
  4. Step 4: Simplify right side
    132,697.88x = 14,463,585,374.30
  5. Step 5: Solve for x
    x = 14,463,585,374.30/132,697.88
  6. Step 6: Final answer
    x = 108,996.36

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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.