Home / 165,565.90-228,469.71-90,112.78

Finding the Fourth Proportional to 165,565.90, 228,469.71 and 90,112.78

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Solution

The fourth proportional to 165,565.90, 228,469.71 and 90,112.78 is: 124,349.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,565.90 : 228,469.71 = 90,112.78 : x
  2. Step 2: Convert to fraction form
    165,565.90/228,469.71 = 90,112.78/x
  3. Step 3: Cross multiply
    165,565.90x = 228,469.71 × 90,112.78
  4. Step 4: Simplify right side
    165,565.90x = 20,588,040,713.89
  5. Step 5: Solve for x
    x = 20,588,040,713.89/165,565.90
  6. Step 6: Final answer
    x = 124,349.52

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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.