Home / 120,649.12-180,990.32-41,742.24

Finding the Fourth Proportional to 120,649.12, 180,990.32 and 41,742.24

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Solution

The fourth proportional to 120,649.12, 180,990.32 and 41,742.24 is: 62,619.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,649.12 : 180,990.32 = 41,742.24 : x
  2. Step 2: Convert to fraction form
    120,649.12/180,990.32 = 41,742.24/x
  3. Step 3: Cross multiply
    120,649.12x = 180,990.32 × 41,742.24
  4. Step 4: Simplify right side
    120,649.12x = 7,554,941,375.12
  5. Step 5: Solve for x
    x = 7,554,941,375.12/120,649.12
  6. Step 6: Final answer
    x = 62,619.12

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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.