Home / 136,849.54-188,851.99-76,419.69

Finding the Fourth Proportional to 136,849.54, 188,851.99 and 76,419.69

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Solution

The fourth proportional to 136,849.54, 188,851.99 and 76,419.69 is: 105,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,849.54 : 188,851.99 = 76,419.69 : x
  2. Step 2: Convert to fraction form
    136,849.54/188,851.99 = 76,419.69/x
  3. Step 3: Cross multiply
    136,849.54x = 188,851.99 × 76,419.69
  4. Step 4: Simplify right side
    136,849.54x = 14,432,010,531.68
  5. Step 5: Solve for x
    x = 14,432,010,531.68/136,849.54
  6. Step 6: Final answer
    x = 105,458.96

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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.