Home / 120,770.15-181,138.80-45,909.14

Finding the Fourth Proportional to 120,770.15, 181,138.80 and 45,909.14

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Solution

The fourth proportional to 120,770.15, 181,138.80 and 45,909.14 is: 68,857.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,770.15 : 181,138.80 = 45,909.14 : x
  2. Step 2: Convert to fraction form
    120,770.15/181,138.80 = 45,909.14/x
  3. Step 3: Cross multiply
    120,770.15x = 181,138.80 × 45,909.14
  4. Step 4: Simplify right side
    120,770.15x = 8,315,926,528.63
  5. Step 5: Solve for x
    x = 8,315,926,528.63/120,770.15
  6. Step 6: Final answer
    x = 68,857.47

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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.