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Finding the Fourth Proportional to 144,903.52, 199,966.32 and 81,241.28

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Solution

The fourth proportional to 144,903.52, 199,966.32 and 81,241.28 is: 112,112.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,903.52 : 199,966.32 = 81,241.28 : x
  2. Step 2: Convert to fraction form
    144,903.52/199,966.32 = 81,241.28/x
  3. Step 3: Cross multiply
    144,903.52x = 199,966.32 × 81,241.28
  4. Step 4: Simplify right side
    144,903.52x = 16,245,519,793.69
  5. Step 5: Solve for x
    x = 16,245,519,793.69/144,903.52
  6. Step 6: Final answer
    x = 112,112.66

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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.