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Finding the Fourth Proportional to 144,998.70, 218,016.45 and 122,189.10

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Solution

The fourth proportional to 144,998.70, 218,016.45 and 122,189.10 is: 183,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,998.70 : 218,016.45 = 122,189.10 : x
  2. Step 2: Convert to fraction form
    144,998.70/218,016.45 = 122,189.10/x
  3. Step 3: Cross multiply
    144,998.70x = 218,016.45 × 122,189.10
  4. Step 4: Simplify right side
    144,998.70x = 26,639,233,810.70
  5. Step 5: Solve for x
    x = 26,639,233,810.70/144,998.70
  6. Step 6: Final answer
    x = 183,720.50

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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.