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Finding the Fourth Proportional to 107,777.67, 161,390.46 and 89,964.03

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Solution

The fourth proportional to 107,777.67, 161,390.46 and 89,964.03 is: 134,715.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,777.67 : 161,390.46 = 89,964.03 : x
  2. Step 2: Convert to fraction form
    107,777.67/161,390.46 = 89,964.03/x
  3. Step 3: Cross multiply
    107,777.67x = 161,390.46 × 89,964.03
  4. Step 4: Simplify right side
    107,777.67x = 14,519,336,185.15
  5. Step 5: Solve for x
    x = 14,519,336,185.15/107,777.67
  6. Step 6: Final answer
    x = 134,715.63

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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.