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Finding the Fourth Proportional to 91,066.67, 136,600.02 and 71,109.89

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Solution

The fourth proportional to 91,066.67, 136,600.02 and 71,109.89 is: 106,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,066.67 : 136,600.02 = 71,109.89 : x
  2. Step 2: Convert to fraction form
    91,066.67/136,600.02 = 71,109.89/x
  3. Step 3: Cross multiply
    91,066.67x = 136,600.02 × 71,109.89
  4. Step 4: Simplify right side
    91,066.67x = 9,713,612,396.20
  5. Step 5: Solve for x
    x = 9,713,612,396.20/91,066.67
  6. Step 6: Final answer
    x = 106,664.85

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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.