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Finding the Fourth Proportional to 121,124.12, 167,159.12 and 67,408.96

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Solution

The fourth proportional to 121,124.12, 167,159.12 and 67,408.96 is: 93,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,124.12 : 167,159.12 = 67,408.96 : x
  2. Step 2: Convert to fraction form
    121,124.12/167,159.12 = 67,408.96/x
  3. Step 3: Cross multiply
    121,124.12x = 167,159.12 × 67,408.96
  4. Step 4: Simplify right side
    121,124.12x = 11,268,022,433.72
  5. Step 5: Solve for x
    x = 11,268,022,433.72/121,124.12
  6. Step 6: Final answer
    x = 93,028.72

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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.