Home / 136,909.45-188,933.56-76,486.15

Finding the Fourth Proportional to 136,909.45, 188,933.56 and 76,486.15

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Solution

The fourth proportional to 136,909.45, 188,933.56 and 76,486.15 is: 105,550.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,909.45 : 188,933.56 = 76,486.15 : x
  2. Step 2: Convert to fraction form
    136,909.45/188,933.56 = 76,486.15/x
  3. Step 3: Cross multiply
    136,909.45x = 188,933.56 × 76,486.15
  4. Step 4: Simplify right side
    136,909.45x = 14,450,800,610.19
  5. Step 5: Solve for x
    x = 14,450,800,610.19/136,909.45
  6. Step 6: Final answer
    x = 105,550.06

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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.