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Finding the Fourth Proportional to 121,617.73, 167,819.70 and 70,620.49

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Solution

The fourth proportional to 121,617.73, 167,819.70 and 70,620.49 is: 97,448.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,617.73 : 167,819.70 = 70,620.49 : x
  2. Step 2: Convert to fraction form
    121,617.73/167,819.70 = 70,620.49/x
  3. Step 3: Cross multiply
    121,617.73x = 167,819.70 × 70,620.49
  4. Step 4: Simplify right side
    121,617.73x = 11,851,509,445.65
  5. Step 5: Solve for x
    x = 11,851,509,445.65/121,617.73
  6. Step 6: Final answer
    x = 97,448.86

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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.