Home / 165,979.78-248,842.05-85,931.93

Finding the Fourth Proportional to 165,979.78, 248,842.05 and 85,931.93

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Solution

The fourth proportional to 165,979.78, 248,842.05 and 85,931.93 is: 128,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,979.78 : 248,842.05 = 85,931.93 : x
  2. Step 2: Convert to fraction form
    165,979.78/248,842.05 = 85,931.93/x
  3. Step 3: Cross multiply
    165,979.78x = 248,842.05 × 85,931.93
  4. Step 4: Simplify right side
    165,979.78x = 21,383,477,621.66
  5. Step 5: Solve for x
    x = 21,383,477,621.66/165,979.78
  6. Step 6: Final answer
    x = 128,831.82

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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.