Home / 132,721.07-198,961.29-66,181.60

Finding the Fourth Proportional to 132,721.07, 198,961.29 and 66,181.60

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Solution

The fourth proportional to 132,721.07, 198,961.29 and 66,181.60 is: 99,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,721.07 : 198,961.29 = 66,181.60 : x
  2. Step 2: Convert to fraction form
    132,721.07/198,961.29 = 66,181.60/x
  3. Step 3: Cross multiply
    132,721.07x = 198,961.29 × 66,181.60
  4. Step 4: Simplify right side
    132,721.07x = 13,167,576,012.86
  5. Step 5: Solve for x
    x = 13,167,576,012.86/132,721.07
  6. Step 6: Final answer
    x = 99,212.40

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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.