Home / 136,945.38-188,965.80-76,508.52

Finding the Fourth Proportional to 136,945.38, 188,965.80 and 76,508.52

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Solution

The fourth proportional to 136,945.38, 188,965.80 and 76,508.52 is: 105,571.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,945.38 : 188,965.80 = 76,508.52 : x
  2. Step 2: Convert to fraction form
    136,945.38/188,965.80 = 76,508.52/x
  3. Step 3: Cross multiply
    136,945.38x = 188,965.80 × 76,508.52
  4. Step 4: Simplify right side
    136,945.38x = 14,457,493,688.62
  5. Step 5: Solve for x
    x = 14,457,493,688.62/136,945.38
  6. Step 6: Final answer
    x = 105,571.24

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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.