Home / 108,139.92-162,216.36-51,991.44

Finding the Fourth Proportional to 108,139.92, 162,216.36 and 51,991.44

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Solution

The fourth proportional to 108,139.92, 162,216.36 and 51,991.44 is: 77,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,139.92 : 162,216.36 = 51,991.44 : x
  2. Step 2: Convert to fraction form
    108,139.92/162,216.36 = 51,991.44/x
  3. Step 3: Cross multiply
    108,139.92x = 162,216.36 × 51,991.44
  4. Step 4: Simplify right side
    108,139.92x = 8,433,862,147.96
  5. Step 5: Solve for x
    x = 8,433,862,147.96/108,139.92
  6. Step 6: Final answer
    x = 77,990.28

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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.