Home / 213,029.46-319,587.90-86,669.37

Finding the Fourth Proportional to 213,029.46, 319,587.90 and 86,669.37

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Solution

The fourth proportional to 213,029.46, 319,587.90 and 86,669.37 is: 130,021.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,029.46 : 319,587.90 = 86,669.37 : x
  2. Step 2: Convert to fraction form
    213,029.46/319,587.90 = 86,669.37/x
  3. Step 3: Cross multiply
    213,029.46x = 319,587.90 × 86,669.37
  4. Step 4: Simplify right side
    213,029.46x = 27,698,481,952.62
  5. Step 5: Solve for x
    x = 27,698,481,952.62/213,029.46
  6. Step 6: Final answer
    x = 130,021.84

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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.