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Finding the Fourth Proportional to 131,418.87, 181,300.82 and 80,433.87

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Solution

The fourth proportional to 131,418.87, 181,300.82 and 80,433.87 is: 110,963.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,418.87 : 181,300.82 = 80,433.87 : x
  2. Step 2: Convert to fraction form
    131,418.87/181,300.82 = 80,433.87/x
  3. Step 3: Cross multiply
    131,418.87x = 181,300.82 × 80,433.87
  4. Step 4: Simplify right side
    131,418.87x = 14,582,726,184.60
  5. Step 5: Solve for x
    x = 14,582,726,184.60/131,418.87
  6. Step 6: Final answer
    x = 110,963.72

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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.