Home / 215,921.30-323,881.94-66,161.00

Finding the Fourth Proportional to 215,921.30, 323,881.94 and 66,161.00

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Solution

The fourth proportional to 215,921.30, 323,881.94 and 66,161.00 is: 99,241.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,921.30 : 323,881.94 = 66,161.00 : x
  2. Step 2: Convert to fraction form
    215,921.30/323,881.94 = 66,161.00/x
  3. Step 3: Cross multiply
    215,921.30x = 323,881.94 × 66,161.00
  4. Step 4: Simplify right side
    215,921.30x = 21,428,354,007.45
  5. Step 5: Solve for x
    x = 21,428,354,007.45/215,921.30
  6. Step 6: Final answer
    x = 99,241.50

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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.