Home / 108,691.08-149,990.58-66,234.12

Finding the Fourth Proportional to 108,691.08, 149,990.58 and 66,234.12

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Solution

The fourth proportional to 108,691.08, 149,990.58 and 66,234.12 is: 91,401.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,691.08 : 149,990.58 = 66,234.12 : x
  2. Step 2: Convert to fraction form
    108,691.08/149,990.58 = 66,234.12/x
  3. Step 3: Cross multiply
    108,691.08x = 149,990.58 × 66,234.12
  4. Step 4: Simplify right side
    108,691.08x = 9,934,494,074.59
  5. Step 5: Solve for x
    x = 9,934,494,074.59/108,691.08
  6. Step 6: Final answer
    x = 91,401.19

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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.