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Finding the Fourth Proportional to 108,662.86, 149,961.95 and 60,919.30

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Solution

The fourth proportional to 108,662.86, 149,961.95 and 60,919.30 is: 84,072.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,662.86 : 149,961.95 = 60,919.30 : x
  2. Step 2: Convert to fraction form
    108,662.86/149,961.95 = 60,919.30/x
  3. Step 3: Cross multiply
    108,662.86x = 149,961.95 × 60,919.30
  4. Step 4: Simplify right side
    108,662.86x = 9,135,577,020.64
  5. Step 5: Solve for x
    x = 9,135,577,020.64/108,662.86
  6. Step 6: Final answer
    x = 84,072.67

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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.