Home / 189,708.19-261,794.19-103,665.31

Finding the Fourth Proportional to 189,708.19, 261,794.19 and 103,665.31

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Solution

The fourth proportional to 189,708.19, 261,794.19 and 103,665.31 is: 143,056.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,708.19 : 261,794.19 = 103,665.31 : x
  2. Step 2: Convert to fraction form
    189,708.19/261,794.19 = 103,665.31/x
  3. Step 3: Cross multiply
    189,708.19x = 261,794.19 × 103,665.31
  4. Step 4: Simplify right side
    189,708.19x = 27,138,975,862.55
  5. Step 5: Solve for x
    x = 27,138,975,862.55/189,708.19
  6. Step 6: Final answer
    x = 143,056.43

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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.