Home / 126,028.80-188,654.40-73,281.60

Finding the Fourth Proportional to 126,028.80, 188,654.40 and 73,281.60

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Solution

The fourth proportional to 126,028.80, 188,654.40 and 73,281.60 is: 109,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,028.80 : 188,654.40 = 73,281.60 : x
  2. Step 2: Convert to fraction form
    126,028.80/188,654.40 = 73,281.60/x
  3. Step 3: Cross multiply
    126,028.80x = 188,654.40 × 73,281.60
  4. Step 4: Simplify right side
    126,028.80x = 13,824,896,279.04
  5. Step 5: Solve for x
    x = 13,824,896,279.04/126,028.80
  6. Step 6: Final answer
    x = 109,696.33

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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.