Home / 158,885.31-219,260.97-86,287.69

Finding the Fourth Proportional to 158,885.31, 219,260.97 and 86,287.69

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Solution

The fourth proportional to 158,885.31, 219,260.97 and 86,287.69 is: 119,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,885.31 : 219,260.97 = 86,287.69 : x
  2. Step 2: Convert to fraction form
    158,885.31/219,260.97 = 86,287.69/x
  3. Step 3: Cross multiply
    158,885.31x = 219,260.97 × 86,287.69
  4. Step 4: Simplify right side
    158,885.31x = 18,919,522,608.46
  5. Step 5: Solve for x
    x = 18,919,522,608.46/158,885.31
  6. Step 6: Final answer
    x = 119,076.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.