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Finding the Fourth Proportional to 192,729.70, 289,043.52 and 87,525.28

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Solution

The fourth proportional to 192,729.70, 289,043.52 and 87,525.28 is: 131,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,729.70 : 289,043.52 = 87,525.28 : x
  2. Step 2: Convert to fraction form
    192,729.70/289,043.52 = 87,525.28/x
  3. Step 3: Cross multiply
    192,729.70x = 289,043.52 × 87,525.28
  4. Step 4: Simplify right side
    192,729.70x = 25,298,615,020.19
  5. Step 5: Solve for x
    x = 25,298,615,020.19/192,729.70
  6. Step 6: Final answer
    x = 131,264.75

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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.