Home / 131,506.20-197,162.10-72,408.60

Finding the Fourth Proportional to 131,506.20, 197,162.10 and 72,408.60

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Solution

The fourth proportional to 131,506.20, 197,162.10 and 72,408.60 is: 108,559.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,506.20 : 197,162.10 = 72,408.60 : x
  2. Step 2: Convert to fraction form
    131,506.20/197,162.10 = 72,408.60/x
  3. Step 3: Cross multiply
    131,506.20x = 197,162.10 × 72,408.60
  4. Step 4: Simplify right side
    131,506.20x = 14,276,231,634.06
  5. Step 5: Solve for x
    x = 14,276,231,634.06/131,506.20
  6. Step 6: Final answer
    x = 108,559.38

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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.