Home / 161,289.72-222,569.43-89,667.90

Finding the Fourth Proportional to 161,289.72, 222,569.43 and 89,667.90

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Solution

The fourth proportional to 161,289.72, 222,569.43 and 89,667.90 is: 123,735.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,289.72 : 222,569.43 = 89,667.90 : x
  2. Step 2: Convert to fraction form
    161,289.72/222,569.43 = 89,667.90/x
  3. Step 3: Cross multiply
    161,289.72x = 222,569.43 × 89,667.90
  4. Step 4: Simplify right side
    161,289.72x = 19,957,333,392.30
  5. Step 5: Solve for x
    x = 19,957,333,392.30/161,289.72
  6. Step 6: Final answer
    x = 123,735.93

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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.