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Finding the Fourth Proportional to 161,139.65, 222,408.29 and 89,544.29

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Solution

The fourth proportional to 161,139.65, 222,408.29 and 89,544.29 is: 123,590.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,139.65 : 222,408.29 = 89,544.29 : x
  2. Step 2: Convert to fraction form
    161,139.65/222,408.29 = 89,544.29/x
  3. Step 3: Cross multiply
    161,139.65x = 222,408.29 × 89,544.29
  4. Step 4: Simplify right side
    161,139.65x = 19,915,391,970.44
  5. Step 5: Solve for x
    x = 19,915,391,970.44/161,139.65
  6. Step 6: Final answer
    x = 123,590.89

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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.