Home / 149,836.04-206,780-86,173.88

Finding the Fourth Proportional to 149,836.04, 206,780 and 86,173.88

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Solution

The fourth proportional to 149,836.04, 206,780 and 86,173.88 is: 118,923.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,836.04 : 206,780 = 86,173.88 : x
  2. Step 2: Convert to fraction form
    149,836.04/206,780 = 86,173.88/x
  3. Step 3: Cross multiply
    149,836.04x = 206,780 × 86,173.88
  4. Step 4: Simplify right side
    149,836.04x = 17,819,034,906.40
  5. Step 5: Solve for x
    x = 17,819,034,906.40/149,836.04
  6. Step 6: Final answer
    x = 118,923.56

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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.