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Finding the Fourth Proportional to 118,980.95, 164,222.28 and 80,804.12

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Solution

The fourth proportional to 118,980.95, 164,222.28 and 80,804.12 is: 111,529.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,980.95 : 164,222.28 = 80,804.12 : x
  2. Step 2: Convert to fraction form
    118,980.95/164,222.28 = 80,804.12/x
  3. Step 3: Cross multiply
    118,980.95x = 164,222.28 × 80,804.12
  4. Step 4: Simplify right side
    118,980.95x = 13,269,835,998.68
  5. Step 5: Solve for x
    x = 13,269,835,998.68/118,980.95
  6. Step 6: Final answer
    x = 111,529.09

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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.