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Finding the Fourth Proportional to 121,025.85, 167,021.58 and 67,309.71

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Solution

The fourth proportional to 121,025.85, 167,021.58 and 67,309.71 is: 92,890.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,025.85 : 167,021.58 = 67,309.71 : x
  2. Step 2: Convert to fraction form
    121,025.85/167,021.58 = 67,309.71/x
  3. Step 3: Cross multiply
    121,025.85x = 167,021.58 × 67,309.71
  4. Step 4: Simplify right side
    121,025.85x = 11,242,174,113.54
  5. Step 5: Solve for x
    x = 11,242,174,113.54/121,025.85
  6. Step 6: Final answer
    x = 92,890.69

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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.