Home / 126,015.80-188,732.10-86,358.20

Finding the Fourth Proportional to 126,015.80, 188,732.10 and 86,358.20

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Solution

The fourth proportional to 126,015.80, 188,732.10 and 86,358.20 is: 129,337.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,015.80 : 188,732.10 = 86,358.20 : x
  2. Step 2: Convert to fraction form
    126,015.80/188,732.10 = 86,358.20/x
  3. Step 3: Cross multiply
    126,015.80x = 188,732.10 × 86,358.20
  4. Step 4: Simplify right side
    126,015.80x = 16,298,564,438.22
  5. Step 5: Solve for x
    x = 16,298,564,438.22/126,015.80
  6. Step 6: Final answer
    x = 129,337.47

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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.