Home / 122,396,034.78-168,910,673.52-66,643,617.42

Finding the Fourth Proportional to 122,396,034.78, 168,910,673.52 and 66,643,617.42

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Solution

The fourth proportional to 122,396,034.78, 168,910,673.52 and 66,643,617.42 is: 91,970,449.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,396,034.78 : 168,910,673.52 = 66,643,617.42 : x
  2. Step 2: Convert to fraction form
    122,396,034.78/168,910,673.52 = 66,643,617.42/x
  3. Step 3: Cross multiply
    122,396,034.78x = 168,910,673.52 × 66,643,617.42
  4. Step 4: Simplify right side
    122,396,034.78x = 11,256,818,304,221,406
  5. Step 5: Solve for x
    x = 11,256,818,304,221,406/122,396,034.78
  6. Step 6: Final answer
    x = 91,970,449.24

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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.