Home / 131,840.10-197,672.79-72,704.10

Finding the Fourth Proportional to 131,840.10, 197,672.79 and 72,704.10

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Solution

The fourth proportional to 131,840.10, 197,672.79 and 72,704.10 is: 109,007.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,840.10 : 197,672.79 = 72,704.10 : x
  2. Step 2: Convert to fraction form
    131,840.10/197,672.79 = 72,704.10/x
  3. Step 3: Cross multiply
    131,840.10x = 197,672.79 × 72,704.10
  4. Step 4: Simplify right side
    131,840.10x = 14,371,622,291.44
  5. Step 5: Solve for x
    x = 14,371,622,291.44/131,840.10
  6. Step 6: Final answer
    x = 109,007.97

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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.