Home / 121,152.20-167,132.61-85,361.94

Finding the Fourth Proportional to 121,152.20, 167,132.61 and 85,361.94

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Solution

The fourth proportional to 121,152.20, 167,132.61 and 85,361.94 is: 117,759.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,152.20 : 167,132.61 = 85,361.94 : x
  2. Step 2: Convert to fraction form
    121,152.20/167,132.61 = 85,361.94/x
  3. Step 3: Cross multiply
    121,152.20x = 167,132.61 × 85,361.94
  4. Step 4: Simplify right side
    121,152.20x = 14,266,763,826.86
  5. Step 5: Solve for x
    x = 14,266,763,826.86/121,152.20
  6. Step 6: Final answer
    x = 117,759.02

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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.