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Finding the Fourth Proportional to 121,683.66, 167,921.64 and 67,969.46

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Solution

The fourth proportional to 121,683.66, 167,921.64 and 67,969.46 is: 93,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,683.66 : 167,921.64 = 67,969.46 : x
  2. Step 2: Convert to fraction form
    121,683.66/167,921.64 = 67,969.46/x
  3. Step 3: Cross multiply
    121,683.66x = 167,921.64 × 67,969.46
  4. Step 4: Simplify right side
    121,683.66x = 11,413,543,193.11
  5. Step 5: Solve for x
    x = 11,413,543,193.11/121,683.66
  6. Step 6: Final answer
    x = 93,796.84

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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.