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Finding the Fourth Proportional to 121,492.85, 167,659.61 and 67,777.90

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Solution

The fourth proportional to 121,492.85, 167,659.61 and 67,777.90 is: 93,533.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,492.85 : 167,659.61 = 67,777.90 : x
  2. Step 2: Convert to fraction form
    121,492.85/167,659.61 = 67,777.90/x
  3. Step 3: Cross multiply
    121,492.85x = 167,659.61 × 67,777.90
  4. Step 4: Simplify right side
    121,492.85x = 11,363,615,522.58
  5. Step 5: Solve for x
    x = 11,363,615,522.58/121,492.85
  6. Step 6: Final answer
    x = 93,533.21

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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.