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Finding the Fourth Proportional to 121,879.17, 182,880.26 and 55,276.82

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Solution

The fourth proportional to 121,879.17, 182,880.26 and 55,276.82 is: 82,943.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,879.17 : 182,880.26 = 55,276.82 : x
  2. Step 2: Convert to fraction form
    121,879.17/182,880.26 = 55,276.82/x
  3. Step 3: Cross multiply
    121,879.17x = 182,880.26 × 55,276.82
  4. Step 4: Simplify right side
    121,879.17x = 10,109,039,213.57
  5. Step 5: Solve for x
    x = 10,109,039,213.57/121,879.17
  6. Step 6: Final answer
    x = 82,943.12

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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.