Home / 120,860.20-181,290.30-76,682.80

Finding the Fourth Proportional to 120,860.20, 181,290.30 and 76,682.80

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Solution

The fourth proportional to 120,860.20, 181,290.30 and 76,682.80 is: 115,024.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,860.20 : 181,290.30 = 76,682.80 : x
  2. Step 2: Convert to fraction form
    120,860.20/181,290.30 = 76,682.80/x
  3. Step 3: Cross multiply
    120,860.20x = 181,290.30 × 76,682.80
  4. Step 4: Simplify right side
    120,860.20x = 13,901,847,816.84
  5. Step 5: Solve for x
    x = 13,901,847,816.84/120,860.20
  6. Step 6: Final answer
    x = 115,024.20

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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.