Home / 129,650.40-194,475.60-121,777.20

Finding the Fourth Proportional to 129,650.40, 194,475.60 and 121,777.20

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Solution

The fourth proportional to 129,650.40, 194,475.60 and 121,777.20 is: 182,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,650.40 : 194,475.60 = 121,777.20 : x
  2. Step 2: Convert to fraction form
    129,650.40/194,475.60 = 121,777.20/x
  3. Step 3: Cross multiply
    129,650.40x = 194,475.60 × 121,777.20
  4. Step 4: Simplify right side
    129,650.40x = 23,682,694,036.32
  5. Step 5: Solve for x
    x = 23,682,694,036.32/129,650.40
  6. Step 6: Final answer
    x = 182,665.80

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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.