Home / 267,981.10-401,971.65-80,992.60

Finding the Fourth Proportional to 267,981.10, 401,971.65 and 80,992.60

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Solution

The fourth proportional to 267,981.10, 401,971.65 and 80,992.60 is: 121,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,981.10 : 401,971.65 = 80,992.60 : x
  2. Step 2: Convert to fraction form
    267,981.10/401,971.65 = 80,992.60/x
  3. Step 3: Cross multiply
    267,981.10x = 401,971.65 × 80,992.60
  4. Step 4: Simplify right side
    267,981.10x = 32,556,729,059.79
  5. Step 5: Solve for x
    x = 32,556,729,059.79/267,981.10
  6. Step 6: Final answer
    x = 121,488.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.