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Finding the Fourth Proportional to 146,308.78, 201,906.39 and 79,240.78

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Solution

The fourth proportional to 146,308.78, 201,906.39 and 79,240.78 is: 109,352.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,308.78 : 201,906.39 = 79,240.78 : x
  2. Step 2: Convert to fraction form
    146,308.78/201,906.39 = 79,240.78/x
  3. Step 3: Cross multiply
    146,308.78x = 201,906.39 × 79,240.78
  4. Step 4: Simplify right side
    146,308.78x = 15,999,219,830.58
  5. Step 5: Solve for x
    x = 15,999,219,830.58/146,308.78
  6. Step 6: Final answer
    x = 109,352.42

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1.5x scale

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.