Home / 165,979.28-248,841.30-85,931.44

Finding the Fourth Proportional to 165,979.28, 248,841.30 and 85,931.44

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Solution

The fourth proportional to 165,979.28, 248,841.30 and 85,931.44 is: 128,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,979.28 : 248,841.30 = 85,931.44 : x
  2. Step 2: Convert to fraction form
    165,979.28/248,841.30 = 85,931.44/x
  3. Step 3: Cross multiply
    165,979.28x = 248,841.30 × 85,931.44
  4. Step 4: Simplify right side
    165,979.28x = 21,383,291,240.47
  5. Step 5: Solve for x
    x = 21,383,291,240.47/165,979.28
  6. Step 6: Final answer
    x = 128,831.09

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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.