Home / 120,438.38-180,605.19-64,266.05

Finding the Fourth Proportional to 120,438.38, 180,605.19 and 64,266.05

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Solution

The fourth proportional to 120,438.38, 180,605.19 and 64,266.05 is: 96,371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,438.38 : 180,605.19 = 64,266.05 : x
  2. Step 2: Convert to fraction form
    120,438.38/180,605.19 = 64,266.05/x
  3. Step 3: Cross multiply
    120,438.38x = 180,605.19 × 64,266.05
  4. Step 4: Simplify right side
    120,438.38x = 11,606,782,170.80
  5. Step 5: Solve for x
    x = 11,606,782,170.80/120,438.38
  6. Step 6: Final answer
    x = 96,371.12

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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.