Home / 165,638.25-228,580.79-90,186.75

Finding the Fourth Proportional to 165,638.25, 228,580.79 and 90,186.75

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Solution

The fourth proportional to 165,638.25, 228,580.79 and 90,186.75 is: 124,457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,638.25 : 228,580.79 = 90,186.75 : x
  2. Step 2: Convert to fraction form
    165,638.25/228,580.79 = 90,186.75/x
  3. Step 3: Cross multiply
    165,638.25x = 228,580.79 × 90,186.75
  4. Step 4: Simplify right side
    165,638.25x = 20,614,958,111.60
  5. Step 5: Solve for x
    x = 20,614,958,111.60/165,638.25
  6. Step 6: Final answer
    x = 124,457.72

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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.