Home / 121,843.02-168,142.82-68,128.04

Finding the Fourth Proportional to 121,843.02, 168,142.82 and 68,128.04

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Solution

The fourth proportional to 121,843.02, 168,142.82 and 68,128.04 is: 94,016.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,843.02 : 168,142.82 = 68,128.04 : x
  2. Step 2: Convert to fraction form
    121,843.02/168,142.82 = 68,128.04/x
  3. Step 3: Cross multiply
    121,843.02x = 168,142.82 × 68,128.04
  4. Step 4: Simplify right side
    121,843.02x = 11,455,240,846.39
  5. Step 5: Solve for x
    x = 11,455,240,846.39/121,843.02
  6. Step 6: Final answer
    x = 94,016.39

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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.