Home / 154,073.60-231,187.20-87,564.80

Finding the Fourth Proportional to 154,073.60, 231,187.20 and 87,564.80

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Solution

The fourth proportional to 154,073.60, 231,187.20 and 87,564.80 is: 131,390.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,073.60 : 231,187.20 = 87,564.80 : x
  2. Step 2: Convert to fraction form
    154,073.60/231,187.20 = 87,564.80/x
  3. Step 3: Cross multiply
    154,073.60x = 231,187.20 × 87,564.80
  4. Step 4: Simplify right side
    154,073.60x = 20,243,860,930.56
  5. Step 5: Solve for x
    x = 20,243,860,930.56/154,073.60
  6. Step 6: Final answer
    x = 131,390.85

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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.