Home / 213,160.14-319,622.49-86,767.88

Finding the Fourth Proportional to 213,160.14, 319,622.49 and 86,767.88

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Solution

The fourth proportional to 213,160.14, 319,622.49 and 86,767.88 is: 130,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,160.14 : 319,622.49 = 86,767.88 : x
  2. Step 2: Convert to fraction form
    213,160.14/319,622.49 = 86,767.88/x
  3. Step 3: Cross multiply
    213,160.14x = 319,622.49 × 86,767.88
  4. Step 4: Simplify right side
    213,160.14x = 27,732,964,259.51
  5. Step 5: Solve for x
    x = 27,732,964,259.51/213,160.14
  6. Step 6: Final answer
    x = 130,103.89

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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.