Home / 161,765.78-223,238.40-89,171.25

Finding the Fourth Proportional to 161,765.78, 223,238.40 and 89,171.25

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Solution

The fourth proportional to 161,765.78, 223,238.40 and 89,171.25 is: 123,057.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,765.78 : 223,238.40 = 89,171.25 : x
  2. Step 2: Convert to fraction form
    161,765.78/223,238.40 = 89,171.25/x
  3. Step 3: Cross multiply
    161,765.78x = 223,238.40 × 89,171.25
  4. Step 4: Simplify right side
    161,765.78x = 19,906,447,176
  5. Step 5: Solve for x
    x = 19,906,447,176/161,765.78
  6. Step 6: Final answer
    x = 123,057.22

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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.