Home / 121,928.86-168,260.34-68,213.71

Finding the Fourth Proportional to 121,928.86, 168,260.34 and 68,213.71

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Solution

The fourth proportional to 121,928.86, 168,260.34 and 68,213.71 is: 94,134.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,928.86 : 168,260.34 = 68,213.71 : x
  2. Step 2: Convert to fraction form
    121,928.86/168,260.34 = 68,213.71/x
  3. Step 3: Cross multiply
    121,928.86x = 168,260.34 × 68,213.71
  4. Step 4: Simplify right side
    121,928.86x = 11,477,662,037.26
  5. Step 5: Solve for x
    x = 11,477,662,037.26/121,928.86
  6. Step 6: Final answer
    x = 94,134.09

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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.