Home / 120,418.16-180,635.52-36,174.80

Finding the Fourth Proportional to 120,418.16, 180,635.52 and 36,174.80

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Solution

The fourth proportional to 120,418.16, 180,635.52 and 36,174.80 is: 54,264.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,418.16 : 180,635.52 = 36,174.80 : x
  2. Step 2: Convert to fraction form
    120,418.16/180,635.52 = 36,174.80/x
  3. Step 3: Cross multiply
    120,418.16x = 180,635.52 × 36,174.80
  4. Step 4: Simplify right side
    120,418.16x = 6,534,453,808.90
  5. Step 5: Solve for x
    x = 6,534,453,808.90/120,418.16
  6. Step 6: Final answer
    x = 54,264.69

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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.