Home / 120,716.10-181,074.15-76,101.30

Finding the Fourth Proportional to 120,716.10, 181,074.15 and 76,101.30

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Solution

The fourth proportional to 120,716.10, 181,074.15 and 76,101.30 is: 114,151.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,716.10 : 181,074.15 = 76,101.30 : x
  2. Step 2: Convert to fraction form
    120,716.10/181,074.15 = 76,101.30/x
  3. Step 3: Cross multiply
    120,716.10x = 181,074.15 × 76,101.30
  4. Step 4: Simplify right side
    120,716.10x = 13,779,978,211.40
  5. Step 5: Solve for x
    x = 13,779,978,211.40/120,716.10
  6. Step 6: Final answer
    x = 114,151.95

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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.