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Finding the Fourth Proportional to 137,107.96, 205,370.28 and 80,887.48

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Solution

The fourth proportional to 137,107.96, 205,370.28 and 80,887.48 is: 121,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107.96 : 205,370.28 = 80,887.48 : x
  2. Step 2: Convert to fraction form
    137,107.96/205,370.28 = 80,887.48/x
  3. Step 3: Cross multiply
    137,107.96x = 205,370.28 × 80,887.48
  4. Step 4: Simplify right side
    137,107.96x = 16,611,884,416.09
  5. Step 5: Solve for x
    x = 16,611,884,416.09/137,107.96
  6. Step 6: Final answer
    x = 121,159.15

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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.