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Finding the Fourth Proportional to 169,589.35, 254,389.74 and 85,303.56

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Solution

The fourth proportional to 169,589.35, 254,389.74 and 85,303.56 is: 127,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,589.35 : 254,389.74 = 85,303.56 : x
  2. Step 2: Convert to fraction form
    169,589.35/254,389.74 = 85,303.56/x
  3. Step 3: Cross multiply
    169,589.35x = 254,389.74 × 85,303.56
  4. Step 4: Simplify right side
    169,589.35x = 21,700,350,449.47
  5. Step 5: Solve for x
    x = 21,700,350,449.47/169,589.35
  6. Step 6: Final answer
    x = 127,958.21

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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.