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Finding the Fourth Proportional to 161,212.86, 222,456 and 93,219.51

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Solution

The fourth proportional to 161,212.86, 222,456 and 93,219.51 is: 128,632.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,212.86 : 222,456 = 93,219.51 : x
  2. Step 2: Convert to fraction form
    161,212.86/222,456 = 93,219.51/x
  3. Step 3: Cross multiply
    161,212.86x = 222,456 × 93,219.51
  4. Step 4: Simplify right side
    161,212.86x = 20,737,239,316.56
  5. Step 5: Solve for x
    x = 20,737,239,316.56/161,212.86
  6. Step 6: Final answer
    x = 128,632.66

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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.