Home / 165,731.40-228,709.26-90,279.90

Finding the Fourth Proportional to 165,731.40, 228,709.26 and 90,279.90

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Solution

The fourth proportional to 165,731.40, 228,709.26 and 90,279.90 is: 124,586.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,731.40 : 228,709.26 = 90,279.90 : x
  2. Step 2: Convert to fraction form
    165,731.40/228,709.26 = 90,279.90/x
  3. Step 3: Cross multiply
    165,731.40x = 228,709.26 × 90,279.90
  4. Step 4: Simplify right side
    165,731.40x = 20,647,849,121.87
  5. Step 5: Solve for x
    x = 20,647,849,121.87/165,731.40
  6. Step 6: Final answer
    x = 124,586.22

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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.