Home / 116,770.32-161,121.96-65,775.12

Finding the Fourth Proportional to 116,770.32, 161,121.96 and 65,775.12

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Solution

The fourth proportional to 116,770.32, 161,121.96 and 65,775.12 is: 90,757.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,770.32 : 161,121.96 = 65,775.12 : x
  2. Step 2: Convert to fraction form
    116,770.32/161,121.96 = 65,775.12/x
  3. Step 3: Cross multiply
    116,770.32x = 161,121.96 × 65,775.12
  4. Step 4: Simplify right side
    116,770.32x = 10,597,816,253.64
  5. Step 5: Solve for x
    x = 10,597,816,253.64/116,770.32
  6. Step 6: Final answer
    x = 90,757.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.