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Finding the Fourth Proportional to 144,398.94, 199,269.99 and 80,736.54

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Solution

The fourth proportional to 144,398.94, 199,269.99 and 80,736.54 is: 111,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,398.94 : 199,269.99 = 80,736.54 : x
  2. Step 2: Convert to fraction form
    144,398.94/199,269.99 = 80,736.54/x
  3. Step 3: Cross multiply
    144,398.94x = 199,269.99 × 80,736.54
  4. Step 4: Simplify right side
    144,398.94x = 16,088,369,518.43
  5. Step 5: Solve for x
    x = 16,088,369,518.43/144,398.94
  6. Step 6: Final answer
    x = 111,416.12

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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.