Home / 121,719.60-167,972.64-68,004.84

Finding the Fourth Proportional to 121,719.60, 167,972.64 and 68,004.84

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Solution

The fourth proportional to 121,719.60, 167,972.64 and 68,004.84 is: 93,846.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,719.60 : 167,972.64 = 68,004.84 : x
  2. Step 2: Convert to fraction form
    121,719.60/167,972.64 = 68,004.84/x
  3. Step 3: Cross multiply
    121,719.60x = 167,972.64 × 68,004.84
  4. Step 4: Simplify right side
    121,719.60x = 11,422,952,507.58
  5. Step 5: Solve for x
    x = 11,422,952,507.58/121,719.60
  6. Step 6: Final answer
    x = 93,846.45

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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.