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Finding the Fourth Proportional to 146,335.78, 201,943.71 and 79,267.78

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Solution

The fourth proportional to 146,335.78, 201,943.71 and 79,267.78 is: 109,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,335.78 : 201,943.71 = 79,267.78 : x
  2. Step 2: Convert to fraction form
    146,335.78/201,943.71 = 79,267.78/x
  3. Step 3: Cross multiply
    146,335.78x = 201,943.71 × 79,267.78
  4. Step 4: Simplify right side
    146,335.78x = 16,007,629,576.66
  5. Step 5: Solve for x
    x = 16,007,629,576.66/146,335.78
  6. Step 6: Final answer
    x = 109,389.72

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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.