Home / 165,570.26-248,181.50-81,213.62

Finding the Fourth Proportional to 165,570.26, 248,181.50 and 81,213.62

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Solution

The fourth proportional to 165,570.26, 248,181.50 and 81,213.62 is: 121,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,570.26 : 248,181.50 = 81,213.62 : x
  2. Step 2: Convert to fraction form
    165,570.26/248,181.50 = 81,213.62/x
  3. Step 3: Cross multiply
    165,570.26x = 248,181.50 × 81,213.62
  4. Step 4: Simplify right side
    165,570.26x = 20,155,718,032.03
  5. Step 5: Solve for x
    x = 20,155,718,032.03/165,570.26
  6. Step 6: Final answer
    x = 121,735.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.