Home / 121,885.32-168,202.14-68,171.25

Finding the Fourth Proportional to 121,885.32, 168,202.14 and 68,171.25

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Solution

The fourth proportional to 121,885.32, 168,202.14 and 68,171.25 is: 94,076.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,885.32 : 168,202.14 = 68,171.25 : x
  2. Step 2: Convert to fraction form
    121,885.32/168,202.14 = 68,171.25/x
  3. Step 3: Cross multiply
    121,885.32x = 168,202.14 × 68,171.25
  4. Step 4: Simplify right side
    121,885.32x = 11,466,550,136.48
  5. Step 5: Solve for x
    x = 11,466,550,136.48/121,885.32
  6. Step 6: Final answer
    x = 94,076.55

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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.