Home / 165,781.69-228,778.76-90,330.19

Finding the Fourth Proportional to 165,781.69, 228,778.76 and 90,330.19

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Solution

The fourth proportional to 165,781.69, 228,778.76 and 90,330.19 is: 124,655.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,781.69 : 228,778.76 = 90,330.19 : x
  2. Step 2: Convert to fraction form
    165,781.69/228,778.76 = 90,330.19/x
  3. Step 3: Cross multiply
    165,781.69x = 228,778.76 × 90,330.19
  4. Step 4: Simplify right side
    165,781.69x = 20,665,628,512.64
  5. Step 5: Solve for x
    x = 20,665,628,512.64/165,781.69
  6. Step 6: Final answer
    x = 124,655.68

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1.5x scale

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.