Home / 101,638.28-140,181.77-69,398.80

Finding the Fourth Proportional to 101,638.28, 140,181.77 and 69,398.80

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Solution

The fourth proportional to 101,638.28, 140,181.77 and 69,398.80 is: 95,716.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,638.28 : 140,181.77 = 69,398.80 : x
  2. Step 2: Convert to fraction form
    101,638.28/140,181.77 = 69,398.80/x
  3. Step 3: Cross multiply
    101,638.28x = 140,181.77 × 69,398.80
  4. Step 4: Simplify right side
    101,638.28x = 9,728,446,442.92
  5. Step 5: Solve for x
    x = 9,728,446,442.92/101,638.28
  6. Step 6: Final answer
    x = 95,716.36

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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.