Home / 215,138.36-322,370.38-136,085.60

Finding the Fourth Proportional to 215,138.36, 322,370.38 and 136,085.60

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Solution

The fourth proportional to 215,138.36, 322,370.38 and 136,085.60 is: 203,915.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,138.36 : 322,370.38 = 136,085.60 : x
  2. Step 2: Convert to fraction form
    215,138.36/322,370.38 = 136,085.60/x
  3. Step 3: Cross multiply
    215,138.36x = 322,370.38 × 136,085.60
  4. Step 4: Simplify right side
    215,138.36x = 43,869,967,560.56
  5. Step 5: Solve for x
    x = 43,869,967,560.56/215,138.36
  6. Step 6: Final answer
    x = 203,915.13

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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.