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Finding the Fourth Proportional to 144,872.72, 199,935.43 and 91,203.74

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Solution

The fourth proportional to 144,872.72, 199,935.43 and 91,203.74 is: 125,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,872.72 : 199,935.43 = 91,203.74 : x
  2. Step 2: Convert to fraction form
    144,872.72/199,935.43 = 91,203.74/x
  3. Step 3: Cross multiply
    144,872.72x = 199,935.43 × 91,203.74
  4. Step 4: Simplify right side
    144,872.72x = 18,234,858,974.51
  5. Step 5: Solve for x
    x = 18,234,858,974.51/144,872.72
  6. Step 6: Final answer
    x = 125,868.13

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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.