Home / 120,831.40-166,755.30-73,086.76

Finding the Fourth Proportional to 120,831.40, 166,755.30 and 73,086.76

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Solution

The fourth proportional to 120,831.40, 166,755.30 and 73,086.76 is: 100,864.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,831.40 : 166,755.30 = 73,086.76 : x
  2. Step 2: Convert to fraction form
    120,831.40/166,755.30 = 73,086.76/x
  3. Step 3: Cross multiply
    120,831.40x = 166,755.30 × 73,086.76
  4. Step 4: Simplify right side
    120,831.40x = 12,187,604,589.83
  5. Step 5: Solve for x
    x = 12,187,604,589.83/120,831.40
  6. Step 6: Final answer
    x = 100,864.55

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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.