Home / 161,965.35-223,512.03-90,345.33

Finding the Fourth Proportional to 161,965.35, 223,512.03 and 90,345.33

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Solution

The fourth proportional to 161,965.35, 223,512.03 and 90,345.33 is: 124,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,965.35 : 223,512.03 = 90,345.33 : x
  2. Step 2: Convert to fraction form
    161,965.35/223,512.03 = 90,345.33/x
  3. Step 3: Cross multiply
    161,965.35x = 223,512.03 × 90,345.33
  4. Step 4: Simplify right side
    161,965.35x = 20,193,268,109.32
  5. Step 5: Solve for x
    x = 20,193,268,109.32/161,965.35
  6. Step 6: Final answer
    x = 124,676.47

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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.