Home / 215,836.30-323,726.10-66,091.60

Finding the Fourth Proportional to 215,836.30, 323,726.10 and 66,091.60

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Solution

The fourth proportional to 215,836.30, 323,726.10 and 66,091.60 is: 99,128.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,836.30 : 323,726.10 = 66,091.60 : x
  2. Step 2: Convert to fraction form
    215,836.30/323,726.10 = 66,091.60/x
  3. Step 3: Cross multiply
    215,836.30x = 323,726.10 × 66,091.60
  4. Step 4: Simplify right side
    215,836.30x = 21,395,575,910.76
  5. Step 5: Solve for x
    x = 21,395,575,910.76/215,836.30
  6. Step 6: Final answer
    x = 99,128.72

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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.