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Finding the Fourth Proportional to 152,310.78, 228,520.85 and 68,063.90

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Solution

The fourth proportional to 152,310.78, 228,520.85 and 68,063.90 is: 102,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,310.78 : 228,520.85 = 68,063.90 : x
  2. Step 2: Convert to fraction form
    152,310.78/228,520.85 = 68,063.90/x
  3. Step 3: Cross multiply
    152,310.78x = 228,520.85 × 68,063.90
  4. Step 4: Simplify right side
    152,310.78x = 15,554,018,799.39
  5. Step 5: Solve for x
    x = 15,554,018,799.39/152,310.78
  6. Step 6: Final answer
    x = 102,120.28

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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.