Home / 215,101.38-322,361.40-81,908.98

Finding the Fourth Proportional to 215,101.38, 322,361.40 and 81,908.98

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Solution

The fourth proportional to 215,101.38, 322,361.40 and 81,908.98 is: 122,752.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,101.38 : 322,361.40 = 81,908.98 : x
  2. Step 2: Convert to fraction form
    215,101.38/322,361.40 = 81,908.98/x
  3. Step 3: Cross multiply
    215,101.38x = 322,361.40 × 81,908.98
  4. Step 4: Simplify right side
    215,101.38x = 26,404,293,465.37
  5. Step 5: Solve for x
    x = 26,404,293,465.37/215,101.38
  6. Step 6: Final answer
    x = 122,752.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.