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Finding the Fourth Proportional to 144,937.68, 200,001.96 and 81,266.64

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Solution

The fourth proportional to 144,937.68, 200,001.96 and 81,266.64 is: 112,141.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,937.68 : 200,001.96 = 81,266.64 : x
  2. Step 2: Convert to fraction form
    144,937.68/200,001.96 = 81,266.64/x
  3. Step 3: Cross multiply
    144,937.68x = 200,001.96 × 81,266.64
  4. Step 4: Simplify right side
    144,937.68x = 16,253,487,282.61
  5. Step 5: Solve for x
    x = 16,253,487,282.61/144,937.68
  6. Step 6: Final answer
    x = 112,141.21

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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.