Home / 136,791.24-188,764.08-76,365.72

Finding the Fourth Proportional to 136,791.24, 188,764.08 and 76,365.72

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Solution

The fourth proportional to 136,791.24, 188,764.08 and 76,365.72 is: 105,380.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,791.24 : 188,764.08 = 76,365.72 : x
  2. Step 2: Convert to fraction form
    136,791.24/188,764.08 = 76,365.72/x
  3. Step 3: Cross multiply
    136,791.24x = 188,764.08 × 76,365.72
  4. Step 4: Simplify right side
    136,791.24x = 14,415,104,879.34
  5. Step 5: Solve for x
    x = 14,415,104,879.34/136,791.24
  6. Step 6: Final answer
    x = 105,380.32

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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.