Home / 136,945.24-188,965.64-76,508.38

Finding the Fourth Proportional to 136,945.24, 188,965.64 and 76,508.38

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Solution

The fourth proportional to 136,945.24, 188,965.64 and 76,508.38 is: 105,571.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,945.24 : 188,965.64 = 76,508.38 : x
  2. Step 2: Convert to fraction form
    136,945.24/188,965.64 = 76,508.38/x
  3. Step 3: Cross multiply
    136,945.24x = 188,965.64 × 76,508.38
  4. Step 4: Simplify right side
    136,945.24x = 14,457,454,992.06
  5. Step 5: Solve for x
    x = 14,457,454,992.06/136,945.24
  6. Step 6: Final answer
    x = 105,571.07

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1.5x scale

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.