Home / 160,971.16-222,129.78-100,538.20

Finding the Fourth Proportional to 160,971.16, 222,129.78 and 100,538.20

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Solution

The fourth proportional to 160,971.16, 222,129.78 and 100,538.20 is: 138,736.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,971.16 : 222,129.78 = 100,538.20 : x
  2. Step 2: Convert to fraction form
    160,971.16/222,129.78 = 100,538.20/x
  3. Step 3: Cross multiply
    160,971.16x = 222,129.78 × 100,538.20
  4. Step 4: Simplify right side
    160,971.16x = 22,332,528,247.60
  5. Step 5: Solve for x
    x = 22,332,528,247.60/160,971.16
  6. Step 6: Final answer
    x = 138,736.21

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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.