Home / 213,739.16-320,857.20-125,056.31

Finding the Fourth Proportional to 213,739.16, 320,857.20 and 125,056.31

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Solution

The fourth proportional to 213,739.16, 320,857.20 and 125,056.31 is: 187,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,739.16 : 320,857.20 = 125,056.31 : x
  2. Step 2: Convert to fraction form
    213,739.16/320,857.20 = 125,056.31/x
  3. Step 3: Cross multiply
    213,739.16x = 320,857.20 × 125,056.31
  4. Step 4: Simplify right side
    213,739.16x = 40,125,215,864.65
  5. Step 5: Solve for x
    x = 40,125,215,864.65/213,739.16
  6. Step 6: Final answer
    x = 187,729.83

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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.