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Finding the Fourth Proportional to 169,140.89, 253,794.69 and 79,189.68

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Solution

The fourth proportional to 169,140.89, 253,794.69 and 79,189.68 is: 118,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,140.89 : 253,794.69 = 79,189.68 : x
  2. Step 2: Convert to fraction form
    169,140.89/253,794.69 = 79,189.68/x
  3. Step 3: Cross multiply
    169,140.89x = 253,794.69 × 79,189.68
  4. Step 4: Simplify right side
    169,140.89x = 20,097,920,286.80
  5. Step 5: Solve for x
    x = 20,097,920,286.80/169,140.89
  6. Step 6: Final answer
    x = 118,823.55

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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.