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Finding the Fourth Proportional to 158,289.92, 218,440.04 and 86,669.92

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Solution

The fourth proportional to 158,289.92, 218,440.04 and 86,669.92 is: 119,604.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,289.92 : 218,440.04 = 86,669.92 : x
  2. Step 2: Convert to fraction form
    158,289.92/218,440.04 = 86,669.92/x
  3. Step 3: Cross multiply
    158,289.92x = 218,440.04 × 86,669.92
  4. Step 4: Simplify right side
    158,289.92x = 18,932,180,791.60
  5. Step 5: Solve for x
    x = 18,932,180,791.60/158,289.92
  6. Step 6: Final answer
    x = 119,604.46

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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.