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Finding the Fourth Proportional to 144,674.42, 199,645.19 and 81,009.02

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Solution

The fourth proportional to 144,674.42, 199,645.19 and 81,009.02 is: 111,789.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,674.42 : 199,645.19 = 81,009.02 : x
  2. Step 2: Convert to fraction form
    144,674.42/199,645.19 = 81,009.02/x
  3. Step 3: Cross multiply
    144,674.42x = 199,645.19 × 81,009.02
  4. Step 4: Simplify right side
    144,674.42x = 16,173,061,587.47
  5. Step 5: Solve for x
    x = 16,173,061,587.47/144,674.42
  6. Step 6: Final answer
    x = 111,789.37

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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.