Home / 149,729.16-206,660.90-86,103.66

Finding the Fourth Proportional to 149,729.16, 206,660.90 and 86,103.66

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Solution

The fourth proportional to 149,729.16, 206,660.90 and 86,103.66 is: 118,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,729.16 : 206,660.90 = 86,103.66 : x
  2. Step 2: Convert to fraction form
    149,729.16/206,660.90 = 86,103.66/x
  3. Step 3: Cross multiply
    149,729.16x = 206,660.90 × 86,103.66
  4. Step 4: Simplify right side
    149,729.16x = 17,794,259,868.89
  5. Step 5: Solve for x
    x = 17,794,259,868.89/149,729.16
  6. Step 6: Final answer
    x = 118,842.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.