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Finding the Fourth Proportional to 121,278.64, 167,352.60 and 67,561.60

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Solution

The fourth proportional to 121,278.64, 167,352.60 and 67,561.60 is: 93,228.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,278.64 : 167,352.60 = 67,561.60 : x
  2. Step 2: Convert to fraction form
    121,278.64/167,352.60 = 67,561.60/x
  3. Step 3: Cross multiply
    121,278.64x = 167,352.60 × 67,561.60
  4. Step 4: Simplify right side
    121,278.64x = 11,306,609,420.16
  5. Step 5: Solve for x
    x = 11,306,609,420.16/121,278.64
  6. Step 6: Final answer
    x = 93,228.37

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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.