Home / 121,661.16-167,890.74-67,947.12

Finding the Fourth Proportional to 121,661.16, 167,890.74 and 67,947.12

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Solution

The fourth proportional to 121,661.16, 167,890.74 and 67,947.12 is: 93,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,661.16 : 167,890.74 = 67,947.12 : x
  2. Step 2: Convert to fraction form
    121,661.16/167,890.74 = 67,947.12/x
  3. Step 3: Cross multiply
    121,661.16x = 167,890.74 × 67,947.12
  4. Step 4: Simplify right side
    121,661.16x = 11,407,692,257.67
  5. Step 5: Solve for x
    x = 11,407,692,257.67/121,661.16
  6. Step 6: Final answer
    x = 93,766.10

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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.