Home / 126,839.52-190,221.31-79,526.51

Finding the Fourth Proportional to 126,839.52, 190,221.31 and 79,526.51

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Solution

The fourth proportional to 126,839.52, 190,221.31 and 79,526.51 is: 119,265.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,839.52 : 190,221.31 = 79,526.51 : x
  2. Step 2: Convert to fraction form
    126,839.52/190,221.31 = 79,526.51/x
  3. Step 3: Cross multiply
    126,839.52x = 190,221.31 × 79,526.51
  4. Step 4: Simplify right side
    126,839.52x = 15,127,636,773.56
  5. Step 5: Solve for x
    x = 15,127,636,773.56/126,839.52
  6. Step 6: Final answer
    x = 119,265.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.