Home / 149,676.78-206,552.36-81,693.21

Finding the Fourth Proportional to 149,676.78, 206,552.36 and 81,693.21

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Solution

The fourth proportional to 149,676.78, 206,552.36 and 81,693.21 is: 112,735.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,676.78 : 206,552.36 = 81,693.21 : x
  2. Step 2: Convert to fraction form
    149,676.78/206,552.36 = 81,693.21/x
  3. Step 3: Cross multiply
    149,676.78x = 206,552.36 × 81,693.21
  4. Step 4: Simplify right side
    149,676.78x = 16,873,924,913.01
  5. Step 5: Solve for x
    x = 16,873,924,913.01/149,676.78
  6. Step 6: Final answer
    x = 112,735.76

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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.