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Finding the Fourth Proportional to 108,379.92, 149,587.68 and 65,952.12

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Solution

The fourth proportional to 108,379.92, 149,587.68 and 65,952.12 is: 91,028.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,379.92 : 149,587.68 = 65,952.12 : x
  2. Step 2: Convert to fraction form
    108,379.92/149,587.68 = 65,952.12/x
  3. Step 3: Cross multiply
    108,379.92x = 149,587.68 × 65,952.12
  4. Step 4: Simplify right side
    108,379.92x = 9,865,624,621.88
  5. Step 5: Solve for x
    x = 9,865,624,621.88/108,379.92
  6. Step 6: Final answer
    x = 91,028.16

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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.