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Finding the Fourth Proportional to 121,280.69, 167,368.68 and 67,568.78

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Solution

The fourth proportional to 121,280.69, 167,368.68 and 67,568.78 is: 93,245.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,280.69 : 167,368.68 = 67,568.78 : x
  2. Step 2: Convert to fraction form
    121,280.69/167,368.68 = 67,568.78/x
  3. Step 3: Cross multiply
    121,280.69x = 167,368.68 × 67,568.78
  4. Step 4: Simplify right side
    121,280.69x = 11,308,897,936.23
  5. Step 5: Solve for x
    x = 11,308,897,936.23/121,280.69
  6. Step 6: Final answer
    x = 93,245.66

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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.