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Finding the Fourth Proportional to 121,494.85, 167,662.37 and 67,779.91

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Solution

The fourth proportional to 121,494.85, 167,662.37 and 67,779.91 is: 93,535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,494.85 : 167,662.37 = 67,779.91 : x
  2. Step 2: Convert to fraction form
    121,494.85/167,662.37 = 67,779.91/x
  3. Step 3: Cross multiply
    121,494.85x = 167,662.37 × 67,779.91
  4. Step 4: Simplify right side
    121,494.85x = 11,364,139,171.78
  5. Step 5: Solve for x
    x = 11,364,139,171.78/121,494.85
  6. Step 6: Final answer
    x = 93,535.98

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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.