Home / 126,014.80-188,730.60-86,357.20

Finding the Fourth Proportional to 126,014.80, 188,730.60 and 86,357.20

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Solution

The fourth proportional to 126,014.80, 188,730.60 and 86,357.20 is: 129,335.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,014.80 : 188,730.60 = 86,357.20 : x
  2. Step 2: Convert to fraction form
    126,014.80/188,730.60 = 86,357.20/x
  3. Step 3: Cross multiply
    126,014.80x = 188,730.60 × 86,357.20
  4. Step 4: Simplify right side
    126,014.80x = 16,298,246,170.32
  5. Step 5: Solve for x
    x = 16,298,246,170.32/126,014.80
  6. Step 6: Final answer
    x = 129,335.97

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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.