Home / 120,003.05-165,601.04-66,286.91

Finding the Fourth Proportional to 120,003.05, 165,601.04 and 66,286.91

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Solution

The fourth proportional to 120,003.05, 165,601.04 and 66,286.91 is: 91,474.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,003.05 : 165,601.04 = 66,286.91 : x
  2. Step 2: Convert to fraction form
    120,003.05/165,601.04 = 66,286.91/x
  3. Step 3: Cross multiply
    120,003.05x = 165,601.04 × 66,286.91
  4. Step 4: Simplify right side
    120,003.05x = 10,977,181,316.95
  5. Step 5: Solve for x
    x = 10,977,181,316.95/120,003.05
  6. Step 6: Final answer
    x = 91,474.18

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1.5x scale

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.