Home / 136,986.36-189,040.56-76,556.96

Finding the Fourth Proportional to 136,986.36, 189,040.56 and 76,556.96

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Solution

The fourth proportional to 136,986.36, 189,040.56 and 76,556.96 is: 105,648.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,986.36 : 189,040.56 = 76,556.96 : x
  2. Step 2: Convert to fraction form
    136,986.36/189,040.56 = 76,556.96/x
  3. Step 3: Cross multiply
    136,986.36x = 189,040.56 × 76,556.96
  4. Step 4: Simplify right side
    136,986.36x = 14,472,370,590.30
  5. Step 5: Solve for x
    x = 14,472,370,590.30/136,986.36
  6. Step 6: Final answer
    x = 105,648.26

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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.