Home / 189,708.24-261,794.14-103,665.31

Finding the Fourth Proportional to 189,708.24, 261,794.14 and 103,665.31

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Solution

The fourth proportional to 189,708.24, 261,794.14 and 103,665.31 is: 143,056.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,708.24 : 261,794.14 = 103,665.31 : x
  2. Step 2: Convert to fraction form
    189,708.24/261,794.14 = 103,665.31/x
  3. Step 3: Cross multiply
    189,708.24x = 261,794.14 × 103,665.31
  4. Step 4: Simplify right side
    189,708.24x = 27,138,970,679.28
  5. Step 5: Solve for x
    x = 27,138,970,679.28/189,708.24
  6. Step 6: Final answer
    x = 143,056.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.