Home / 120,831.06-166,793.36-80,530.11

Finding the Fourth Proportional to 120,831.06, 166,793.36 and 80,530.11

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Solution

The fourth proportional to 120,831.06, 166,793.36 and 80,530.11 is: 111,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,831.06 : 166,793.36 = 80,530.11 : x
  2. Step 2: Convert to fraction form
    120,831.06/166,793.36 = 80,530.11/x
  3. Step 3: Cross multiply
    120,831.06x = 166,793.36 × 80,530.11
  4. Step 4: Simplify right side
    120,831.06x = 13,431,887,225.42
  5. Step 5: Solve for x
    x = 13,431,887,225.42/120,831.06
  6. Step 6: Final answer
    x = 111,162.54

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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.