Home / 206,621.89-285,102.18-115,981.67

Finding the Fourth Proportional to 206,621.89, 285,102.18 and 115,981.67

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Solution

The fourth proportional to 206,621.89, 285,102.18 and 115,981.67 is: 160,034.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,621.89 : 285,102.18 = 115,981.67 : x
  2. Step 2: Convert to fraction form
    206,621.89/285,102.18 = 115,981.67/x
  3. Step 3: Cross multiply
    206,621.89x = 285,102.18 × 115,981.67
  4. Step 4: Simplify right side
    206,621.89x = 33,066,627,669.80
  5. Step 5: Solve for x
    x = 33,066,627,669.80/206,621.89
  6. Step 6: Final answer
    x = 160,034.49

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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.