Home / 189,321.39-261,264.38-104,438.43

Finding the Fourth Proportional to 189,321.39, 261,264.38 and 104,438.43

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Solution

The fourth proportional to 189,321.39, 261,264.38 and 104,438.43 is: 144,125.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,321.39 : 261,264.38 = 104,438.43 : x
  2. Step 2: Convert to fraction form
    189,321.39/261,264.38 = 104,438.43/x
  3. Step 3: Cross multiply
    189,321.39x = 261,264.38 × 104,438.43
  4. Step 4: Simplify right side
    189,321.39x = 27,286,041,139.93
  5. Step 5: Solve for x
    x = 27,286,041,139.93/189,321.39
  6. Step 6: Final answer
    x = 144,125.51

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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.