Home / 136,749.69-205,198.17-66,629.01

Finding the Fourth Proportional to 136,749.69, 205,198.17 and 66,629.01

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Solution

The fourth proportional to 136,749.69, 205,198.17 and 66,629.01 is: 99,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,749.69 : 205,198.17 = 66,629.01 : x
  2. Step 2: Convert to fraction form
    136,749.69/205,198.17 = 66,629.01/x
  3. Step 3: Cross multiply
    136,749.69x = 205,198.17 × 66,629.01
  4. Step 4: Simplify right side
    136,749.69x = 13,672,150,920.91
  5. Step 5: Solve for x
    x = 13,672,150,920.91/136,749.69
  6. Step 6: Final answer
    x = 99,979.39

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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.