Home / 152,421.20-228,761.40-68,310.80

Finding the Fourth Proportional to 152,421.20, 228,761.40 and 68,310.80

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Solution

The fourth proportional to 152,421.20, 228,761.40 and 68,310.80 is: 102,524.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,421.20 : 228,761.40 = 68,310.80 : x
  2. Step 2: Convert to fraction form
    152,421.20/228,761.40 = 68,310.80/x
  3. Step 3: Cross multiply
    152,421.20x = 228,761.40 × 68,310.80
  4. Step 4: Simplify right side
    152,421.20x = 15,626,874,243.12
  5. Step 5: Solve for x
    x = 15,626,874,243.12/152,421.20
  6. Step 6: Final answer
    x = 102,524.28

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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.