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Finding the Fourth Proportional to 143,691.08, 215,536.62 and 43,851.78

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Solution

The fourth proportional to 143,691.08, 215,536.62 and 43,851.78 is: 65,777.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,691.08 : 215,536.62 = 43,851.78 : x
  2. Step 2: Convert to fraction form
    143,691.08/215,536.62 = 43,851.78/x
  3. Step 3: Cross multiply
    143,691.08x = 215,536.62 × 43,851.78
  4. Step 4: Simplify right side
    143,691.08x = 9,451,664,442.18
  5. Step 5: Solve for x
    x = 9,451,664,442.18/143,691.08
  6. Step 6: Final answer
    x = 65,777.67

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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.