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Finding the Fourth Proportional to 121,791.65, 168,065.67 and 67,340.66

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Solution

The fourth proportional to 121,791.65, 168,065.67 and 67,340.66 is: 92,926.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,791.65 : 168,065.67 = 67,340.66 : x
  2. Step 2: Convert to fraction form
    121,791.65/168,065.67 = 67,340.66/x
  3. Step 3: Cross multiply
    121,791.65x = 168,065.67 × 67,340.66
  4. Step 4: Simplify right side
    121,791.65x = 11,317,652,804.44
  5. Step 5: Solve for x
    x = 11,317,652,804.44/121,791.65
  6. Step 6: Final answer
    x = 92,926.35

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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.