Home / 121,771.89-168,033.96-68,049.45

Finding the Fourth Proportional to 121,771.89, 168,033.96 and 68,049.45

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Solution

The fourth proportional to 121,771.89, 168,033.96 and 68,049.45 is: 93,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,771.89 : 168,033.96 = 68,049.45 : x
  2. Step 2: Convert to fraction form
    121,771.89/168,033.96 = 68,049.45/x
  3. Step 3: Cross multiply
    121,771.89x = 168,033.96 × 68,049.45
  4. Step 4: Simplify right side
    121,771.89x = 11,434,618,559.32
  5. Step 5: Solve for x
    x = 11,434,618,559.32/121,771.89
  6. Step 6: Final answer
    x = 93,901.96

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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.