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Finding the Fourth Proportional to 121,361.38, 167,484.37 and 67,646.78

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Solution

The fourth proportional to 121,361.38, 167,484.37 and 67,646.78 is: 93,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,361.38 : 167,484.37 = 67,646.78 : x
  2. Step 2: Convert to fraction form
    121,361.38/167,484.37 = 67,646.78/x
  3. Step 3: Cross multiply
    121,361.38x = 167,484.37 × 67,646.78
  4. Step 4: Simplify right side
    121,361.38x = 11,329,778,330.83
  5. Step 5: Solve for x
    x = 11,329,778,330.83/121,361.38
  6. Step 6: Final answer
    x = 93,355.71

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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.