Home / 131,137.25-180,973.85-80,143.70

Finding the Fourth Proportional to 131,137.25, 180,973.85 and 80,143.70

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Solution

The fourth proportional to 131,137.25, 180,973.85 and 80,143.70 is: 110,601.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,137.25 : 180,973.85 = 80,143.70 : x
  2. Step 2: Convert to fraction form
    131,137.25/180,973.85 = 80,143.70/x
  3. Step 3: Cross multiply
    131,137.25x = 180,973.85 × 80,143.70
  4. Step 4: Simplify right side
    131,137.25x = 14,503,912,636.66
  5. Step 5: Solve for x
    x = 14,503,912,636.66/131,137.25
  6. Step 6: Final answer
    x = 110,601.02

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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.