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Finding the Fourth Proportional to 121,386.44, 167,506.98 and 66,947.56

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Solution

The fourth proportional to 121,386.44, 167,506.98 and 66,947.56 is: 92,384.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,386.44 : 167,506.98 = 66,947.56 : x
  2. Step 2: Convert to fraction form
    121,386.44/167,506.98 = 66,947.56/x
  3. Step 3: Cross multiply
    121,386.44x = 167,506.98 × 66,947.56
  4. Step 4: Simplify right side
    121,386.44x = 11,214,183,593.97
  5. Step 5: Solve for x
    x = 11,214,183,593.97/121,386.44
  6. Step 6: Final answer
    x = 92,384.15

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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.