Home / 121,823.78-168,118.89-68,103.02

Finding the Fourth Proportional to 121,823.78, 168,118.89 and 68,103.02

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Solution

The fourth proportional to 121,823.78, 168,118.89 and 68,103.02 is: 93,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,823.78 : 168,118.89 = 68,103.02 : x
  2. Step 2: Convert to fraction form
    121,823.78/168,118.89 = 68,103.02/x
  3. Step 3: Cross multiply
    121,823.78x = 168,118.89 × 68,103.02
  4. Step 4: Simplify right side
    121,823.78x = 11,449,403,287.45
  5. Step 5: Solve for x
    x = 11,449,403,287.45/121,823.78
  6. Step 6: Final answer
    x = 93,983.32

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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.