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Finding the Fourth Proportional to 121,571.69, 167,777.39 and 67,867.19

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Solution

The fourth proportional to 121,571.69, 167,777.39 and 67,867.19 is: 93,661.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,571.69 : 167,777.39 = 67,867.19 : x
  2. Step 2: Convert to fraction form
    121,571.69/167,777.39 = 67,867.19/x
  3. Step 3: Cross multiply
    121,571.69x = 167,777.39 × 67,867.19
  4. Step 4: Simplify right side
    121,571.69x = 11,386,580,004.83
  5. Step 5: Solve for x
    x = 11,386,580,004.83/121,571.69
  6. Step 6: Final answer
    x = 93,661.44

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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.