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Finding the Fourth Proportional to 223,162.86, 307,965.06 and 121,188.36

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Solution

The fourth proportional to 223,162.86, 307,965.06 and 121,188.36 is: 167,240.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,162.86 : 307,965.06 = 121,188.36 : x
  2. Step 2: Convert to fraction form
    223,162.86/307,965.06 = 121,188.36/x
  3. Step 3: Cross multiply
    223,162.86x = 307,965.06 × 121,188.36
  4. Step 4: Simplify right side
    223,162.86x = 37,321,780,558.70
  5. Step 5: Solve for x
    x = 37,321,780,558.70/223,162.86
  6. Step 6: Final answer
    x = 167,240.11

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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.