Home / 121,939.56-168,260.49-68,218.74

Finding the Fourth Proportional to 121,939.56, 168,260.49 and 68,218.74

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Solution

The fourth proportional to 121,939.56, 168,260.49 and 68,218.74 is: 94,132.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,939.56 : 168,260.49 = 68,218.74 : x
  2. Step 2: Convert to fraction form
    121,939.56/168,260.49 = 68,218.74/x
  3. Step 3: Cross multiply
    121,939.56x = 168,260.49 × 68,218.74
  4. Step 4: Simplify right side
    121,939.56x = 11,478,518,619.58
  5. Step 5: Solve for x
    x = 11,478,518,619.58/121,939.56
  6. Step 6: Final answer
    x = 94,132.85

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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.