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Finding the Fourth Proportional to 136,481.49, 188,339.40 and 76,049.01

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Solution

The fourth proportional to 136,481.49, 188,339.40 and 76,049.01 is: 104,944.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,481.49 : 188,339.40 = 76,049.01 : x
  2. Step 2: Convert to fraction form
    136,481.49/188,339.40 = 76,049.01/x
  3. Step 3: Cross multiply
    136,481.49x = 188,339.40 × 76,049.01
  4. Step 4: Simplify right side
    136,481.49x = 14,323,024,913.99
  5. Step 5: Solve for x
    x = 14,323,024,913.99/136,481.49
  6. Step 6: Final answer
    x = 104,944.82

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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.