Home / 161,721.87-223,169.68-90,100.05

Finding the Fourth Proportional to 161,721.87, 223,169.68 and 90,100.05

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Solution

The fourth proportional to 161,721.87, 223,169.68 and 90,100.05 is: 124,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,721.87 : 223,169.68 = 90,100.05 : x
  2. Step 2: Convert to fraction form
    161,721.87/223,169.68 = 90,100.05/x
  3. Step 3: Cross multiply
    161,721.87x = 223,169.68 × 90,100.05
  4. Step 4: Simplify right side
    161,721.87x = 20,107,599,326.48
  5. Step 5: Solve for x
    x = 20,107,599,326.48/161,721.87
  6. Step 6: Final answer
    x = 124,334.45

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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.