Home / 121,860.15-168,171.59-68,145.04

Finding the Fourth Proportional to 121,860.15, 168,171.59 and 68,145.04

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Solution

The fourth proportional to 121,860.15, 168,171.59 and 68,145.04 is: 94,042.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,860.15 : 168,171.59 = 68,145.04 : x
  2. Step 2: Convert to fraction form
    121,860.15/168,171.59 = 68,145.04/x
  3. Step 3: Cross multiply
    121,860.15x = 168,171.59 × 68,145.04
  4. Step 4: Simplify right side
    121,860.15x = 11,460,059,162.03
  5. Step 5: Solve for x
    x = 11,460,059,162.03/121,860.15
  6. Step 6: Final answer
    x = 94,042.71

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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.