Home / 199,115.70-274,705.47-131,172.90

Finding the Fourth Proportional to 199,115.70, 274,705.47 and 131,172.90

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Solution

The fourth proportional to 199,115.70, 274,705.47 and 131,172.90 is: 180,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,115.70 : 274,705.47 = 131,172.90 : x
  2. Step 2: Convert to fraction form
    199,115.70/274,705.47 = 131,172.90/x
  3. Step 3: Cross multiply
    199,115.70x = 274,705.47 × 131,172.90
  4. Step 4: Simplify right side
    199,115.70x = 36,033,913,145.76
  5. Step 5: Solve for x
    x = 36,033,913,145.76/199,115.70
  6. Step 6: Final answer
    x = 180,969.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.