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Finding the Fourth Proportional to 220,163.86, 330,021.63 and 86,861.14

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Solution

The fourth proportional to 220,163.86, 330,021.63 and 86,861.14 is: 130,203.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,163.86 : 330,021.63 = 86,861.14 : x
  2. Step 2: Convert to fraction form
    220,163.86/330,021.63 = 86,861.14/x
  3. Step 3: Cross multiply
    220,163.86x = 330,021.63 × 86,861.14
  4. Step 4: Simplify right side
    220,163.86x = 28,666,055,006.46
  5. Step 5: Solve for x
    x = 28,666,055,006.46/220,163.86
  6. Step 6: Final answer
    x = 130,203.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.