Home / 161,015.72-222,202.52-100,621.48

Finding the Fourth Proportional to 161,015.72, 222,202.52 and 100,621.48

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Solution

The fourth proportional to 161,015.72, 222,202.52 and 100,621.48 is: 138,858.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,015.72 : 222,202.52 = 100,621.48 : x
  2. Step 2: Convert to fraction form
    161,015.72/222,202.52 = 100,621.48/x
  3. Step 3: Cross multiply
    161,015.72x = 222,202.52 × 100,621.48
  4. Step 4: Simplify right side
    161,015.72x = 22,358,346,422.13
  5. Step 5: Solve for x
    x = 22,358,346,422.13/161,015.72
  6. Step 6: Final answer
    x = 138,858.16

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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.