Home / 195,712.58-270,078.78-115,145.30

Finding the Fourth Proportional to 195,712.58, 270,078.78 and 115,145.30

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Solution

The fourth proportional to 195,712.58, 270,078.78 and 115,145.30 is: 158,897.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,712.58 : 270,078.78 = 115,145.30 : x
  2. Step 2: Convert to fraction form
    195,712.58/270,078.78 = 115,145.30/x
  3. Step 3: Cross multiply
    195,712.58x = 270,078.78 × 115,145.30
  4. Step 4: Simplify right side
    195,712.58x = 31,098,300,796.34
  5. Step 5: Solve for x
    x = 31,098,300,796.34/195,712.58
  6. Step 6: Final answer
    x = 158,897.82

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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.