Home / 138,476.31-190,873.44-108,209.04

Finding the Fourth Proportional to 138,476.31, 190,873.44 and 108,209.04

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Solution

The fourth proportional to 138,476.31, 190,873.44 and 108,209.04 is: 149,153.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,476.31 : 190,873.44 = 108,209.04 : x
  2. Step 2: Convert to fraction form
    138,476.31/190,873.44 = 108,209.04/x
  3. Step 3: Cross multiply
    138,476.31x = 190,873.44 × 108,209.04
  4. Step 4: Simplify right side
    138,476.31x = 20,654,231,703.90
  5. Step 5: Solve for x
    x = 20,654,231,703.90/138,476.31
  6. Step 6: Final answer
    x = 149,153.54

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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.