Home / 149,031.75-205,664.81-81,049.49

Finding the Fourth Proportional to 149,031.75, 205,664.81 and 81,049.49

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Solution

The fourth proportional to 149,031.75, 205,664.81 and 81,049.49 is: 111,848.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,031.75 : 205,664.81 = 81,049.49 : x
  2. Step 2: Convert to fraction form
    149,031.75/205,664.81 = 81,049.49/x
  3. Step 3: Cross multiply
    149,031.75x = 205,664.81 × 81,049.49
  4. Step 4: Simplify right side
    149,031.75x = 16,669,027,961.45
  5. Step 5: Solve for x
    x = 16,669,027,961.45/149,031.75
  6. Step 6: Final answer
    x = 111,848.84

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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.