Home / 189,402.66-261,381.18-103,367.18

Finding the Fourth Proportional to 189,402.66, 261,381.18 and 103,367.18

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Solution

The fourth proportional to 189,402.66, 261,381.18 and 103,367.18 is: 142,649.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,402.66 : 261,381.18 = 103,367.18 : x
  2. Step 2: Convert to fraction form
    189,402.66/261,381.18 = 103,367.18/x
  3. Step 3: Cross multiply
    189,402.66x = 261,381.18 × 103,367.18
  4. Step 4: Simplify right side
    189,402.66x = 27,018,234,103.48
  5. Step 5: Solve for x
    x = 27,018,234,103.48/189,402.66
  6. Step 6: Final answer
    x = 142,649.71

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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.