Home / 120,629.40-180,945.40-36,390.29

Finding the Fourth Proportional to 120,629.40, 180,945.40 and 36,390.29

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Solution

The fourth proportional to 120,629.40, 180,945.40 and 36,390.29 is: 54,585.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,629.40 : 180,945.40 = 36,390.29 : x
  2. Step 2: Convert to fraction form
    120,629.40/180,945.40 = 36,390.29/x
  3. Step 3: Cross multiply
    120,629.40x = 180,945.40 × 36,390.29
  4. Step 4: Simplify right side
    120,629.40x = 6,584,655,758.92
  5. Step 5: Solve for x
    x = 6,584,655,758.92/120,629.40
  6. Step 6: Final answer
    x = 54,585.83

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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.