Home / 120,786.12-181,108.40-80,850.59

Finding the Fourth Proportional to 120,786.12, 181,108.40 and 80,850.59

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Solution

The fourth proportional to 120,786.12, 181,108.40 and 80,850.59 is: 121,228.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,786.12 : 181,108.40 = 80,850.59 : x
  2. Step 2: Convert to fraction form
    120,786.12/181,108.40 = 80,850.59/x
  3. Step 3: Cross multiply
    120,786.12x = 181,108.40 × 80,850.59
  4. Step 4: Simplify right side
    120,786.12x = 14,642,719,886.29
  5. Step 5: Solve for x
    x = 14,642,719,886.29/120,786.12
  6. Step 6: Final answer
    x = 121,228.50

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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.