Home / 215,899.97-323,859.68-66,129.35

Finding the Fourth Proportional to 215,899.97, 323,859.68 and 66,129.35

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Solution

The fourth proportional to 215,899.97, 323,859.68 and 66,129.35 is: 99,197.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,899.97 : 323,859.68 = 66,129.35 : x
  2. Step 2: Convert to fraction form
    215,899.97/323,859.68 = 66,129.35/x
  3. Step 3: Cross multiply
    215,899.97x = 323,859.68 × 66,129.35
  4. Step 4: Simplify right side
    215,899.97x = 21,416,628,179.66
  5. Step 5: Solve for x
    x = 21,416,628,179.66/215,899.97
  6. Step 6: Final answer
    x = 99,197.00

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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.