Home / 213,496.40-319,994.45-87,057.72

Finding the Fourth Proportional to 213,496.40, 319,994.45 and 87,057.72

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Solution

The fourth proportional to 213,496.40, 319,994.45 and 87,057.72 is: 130,484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,496.40 : 319,994.45 = 87,057.72 : x
  2. Step 2: Convert to fraction form
    213,496.40/319,994.45 = 87,057.72/x
  3. Step 3: Cross multiply
    213,496.40x = 319,994.45 × 87,057.72
  4. Step 4: Simplify right side
    213,496.40x = 27,857,987,229.65
  5. Step 5: Solve for x
    x = 27,857,987,229.65/213,496.40
  6. Step 6: Final answer
    x = 130,484.58

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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.