Home / 120,629.74-180,689.46-76,233.64

Finding the Fourth Proportional to 120,629.74, 180,689.46 and 76,233.64

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Solution

The fourth proportional to 120,629.74, 180,689.46 and 76,233.64 is: 114,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,629.74 : 180,689.46 = 76,233.64 : x
  2. Step 2: Convert to fraction form
    120,629.74/180,689.46 = 76,233.64/x
  3. Step 3: Cross multiply
    120,629.74x = 180,689.46 × 76,233.64
  4. Step 4: Simplify right side
    120,629.74x = 13,774,615,245.43
  5. Step 5: Solve for x
    x = 13,774,615,245.43/120,629.74
  6. Step 6: Final answer
    x = 114,189.21

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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.