Home / 165,642.12-248,268.78-86,793.48

Finding the Fourth Proportional to 165,642.12, 248,268.78 and 86,793.48

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Solution

The fourth proportional to 165,642.12, 248,268.78 and 86,793.48 is: 130,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,642.12 : 248,268.78 = 86,793.48 : x
  2. Step 2: Convert to fraction form
    165,642.12/248,268.78 = 86,793.48/x
  3. Step 3: Cross multiply
    165,642.12x = 248,268.78 × 86,793.48
  4. Step 4: Simplify right side
    165,642.12x = 21,548,111,391.55
  5. Step 5: Solve for x
    x = 21,548,111,391.55/165,642.12
  6. Step 6: Final answer
    x = 130,088.36

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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.