Home / 193,321.62-289,865.96-86,686.28

Finding the Fourth Proportional to 193,321.62, 289,865.96 and 86,686.28

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Solution

The fourth proportional to 193,321.62, 289,865.96 and 86,686.28 is: 129,977.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,321.62 : 289,865.96 = 86,686.28 : x
  2. Step 2: Convert to fraction form
    193,321.62/289,865.96 = 86,686.28/x
  3. Step 3: Cross multiply
    193,321.62x = 289,865.96 × 86,686.28
  4. Step 4: Simplify right side
    193,321.62x = 25,127,399,888.27
  5. Step 5: Solve for x
    x = 25,127,399,888.27/193,321.62
  6. Step 6: Final answer
    x = 129,977.18

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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.