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Finding the Fourth Proportional to 132,991.17, 199,580.31 and 120,286.32

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Solution

The fourth proportional to 132,991.17, 199,580.31 and 120,286.32 is: 180,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,991.17 : 199,580.31 = 120,286.32 : x
  2. Step 2: Convert to fraction form
    132,991.17/199,580.31 = 120,286.32/x
  3. Step 3: Cross multiply
    132,991.17x = 199,580.31 × 120,286.32
  4. Step 4: Simplify right side
    132,991.17x = 24,006,781,034.36
  5. Step 5: Solve for x
    x = 24,006,781,034.36/132,991.17
  6. Step 6: Final answer
    x = 180,514.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.