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Finding the Fourth Proportional to 152,067.40, 228,101.10 and 68,961.40

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Solution

The fourth proportional to 152,067.40, 228,101.10 and 68,961.40 is: 103,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,067.40 : 228,101.10 = 68,961.40 : x
  2. Step 2: Convert to fraction form
    152,067.40/228,101.10 = 68,961.40/x
  3. Step 3: Cross multiply
    152,067.40x = 228,101.10 × 68,961.40
  4. Step 4: Simplify right side
    152,067.40x = 15,730,171,197.54
  5. Step 5: Solve for x
    x = 15,730,171,197.54/152,067.40
  6. Step 6: Final answer
    x = 103,442.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.