Home / 120,981.28-166,906.21-69,984.55

Finding the Fourth Proportional to 120,981.28, 166,906.21 and 69,984.55

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Solution

The fourth proportional to 120,981.28, 166,906.21 and 69,984.55 is: 96,550.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,981.28 : 166,906.21 = 69,984.55 : x
  2. Step 2: Convert to fraction form
    120,981.28/166,906.21 = 69,984.55/x
  3. Step 3: Cross multiply
    120,981.28x = 166,906.21 × 69,984.55
  4. Step 4: Simplify right side
    120,981.28x = 11,680,855,999.06
  5. Step 5: Solve for x
    x = 11,680,855,999.06/120,981.28
  6. Step 6: Final answer
    x = 96,550.94

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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.