Home / 121,563.25-167,556.51-81,262.31

Finding the Fourth Proportional to 121,563.25, 167,556.51 and 81,262.31

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Solution

The fourth proportional to 121,563.25, 167,556.51 and 81,262.31 is: 112,007.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,563.25 : 167,556.51 = 81,262.31 : x
  2. Step 2: Convert to fraction form
    121,563.25/167,556.51 = 81,262.31/x
  3. Step 3: Cross multiply
    121,563.25x = 167,556.51 × 81,262.31
  4. Step 4: Simplify right side
    121,563.25x = 13,616,027,814.04
  5. Step 5: Solve for x
    x = 13,616,027,814.04/121,563.25
  6. Step 6: Final answer
    x = 112,007.76

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1.5x scale

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.