Home / 189,645.13-261,718.21-109,072.71

Finding the Fourth Proportional to 189,645.13, 261,718.21 and 109,072.71

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Solution

The fourth proportional to 189,645.13, 261,718.21 and 109,072.71 is: 150,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,645.13 : 261,718.21 = 109,072.71 : x
  2. Step 2: Convert to fraction form
    189,645.13/261,718.21 = 109,072.71/x
  3. Step 3: Cross multiply
    189,645.13x = 261,718.21 × 109,072.71
  4. Step 4: Simplify right side
    189,645.13x = 28,546,314,421.05
  5. Step 5: Solve for x
    x = 28,546,314,421.05/189,645.13
  6. Step 6: Final answer
    x = 150,524.90

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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.