Home / 165,455.10-228,321.45-90,003.60

Finding the Fourth Proportional to 165,455.10, 228,321.45 and 90,003.60

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Solution

The fourth proportional to 165,455.10, 228,321.45 and 90,003.60 is: 124,201.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,455.10 : 228,321.45 = 90,003.60 : x
  2. Step 2: Convert to fraction form
    165,455.10/228,321.45 = 90,003.60/x
  3. Step 3: Cross multiply
    165,455.10x = 228,321.45 × 90,003.60
  4. Step 4: Simplify right side
    165,455.10x = 20,549,752,457.22
  5. Step 5: Solve for x
    x = 20,549,752,457.22/165,455.10
  6. Step 6: Final answer
    x = 124,201.38

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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.