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Finding the Fourth Proportional to 169,344.87, 253,984.90 and 85,081.68

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Solution

The fourth proportional to 169,344.87, 253,984.90 and 85,081.68 is: 127,606.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,344.87 : 253,984.90 = 85,081.68 : x
  2. Step 2: Convert to fraction form
    169,344.87/253,984.90 = 85,081.68/x
  3. Step 3: Cross multiply
    169,344.87x = 253,984.90 × 85,081.68
  4. Step 4: Simplify right side
    169,344.87x = 21,609,461,986.63
  5. Step 5: Solve for x
    x = 21,609,461,986.63/169,344.87
  6. Step 6: Final answer
    x = 127,606.24

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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.