Home / 100,110.24-138,181.68-57,698.64

Finding the Fourth Proportional to 100,110.24, 138,181.68 and 57,698.64

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Solution

The fourth proportional to 100,110.24, 138,181.68 and 57,698.64 is: 79,641.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,110.24 : 138,181.68 = 57,698.64 : x
  2. Step 2: Convert to fraction form
    100,110.24/138,181.68 = 57,698.64/x
  3. Step 3: Cross multiply
    100,110.24x = 138,181.68 × 57,698.64
  4. Step 4: Simplify right side
    100,110.24x = 7,972,895,008.92
  5. Step 5: Solve for x
    x = 7,972,895,008.92/100,110.24
  6. Step 6: Final answer
    x = 79,641.15

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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.