Home / 165,678.75-228,636.81-90,227.25

Finding the Fourth Proportional to 165,678.75, 228,636.81 and 90,227.25

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Solution

The fourth proportional to 165,678.75, 228,636.81 and 90,227.25 is: 124,513.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,678.75 : 228,636.81 = 90,227.25 : x
  2. Step 2: Convert to fraction form
    165,678.75/228,636.81 = 90,227.25/x
  3. Step 3: Cross multiply
    165,678.75x = 228,636.81 × 90,227.25
  4. Step 4: Simplify right side
    165,678.75x = 20,629,270,615.07
  5. Step 5: Solve for x
    x = 20,629,270,615.07/165,678.75
  6. Step 6: Final answer
    x = 124,513.68

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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.