Home / 121,910.12-168,168.24-70,917.11

Finding the Fourth Proportional to 121,910.12, 168,168.24 and 70,917.11

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Solution

The fourth proportional to 121,910.12, 168,168.24 and 70,917.11 is: 97,826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,910.12 : 168,168.24 = 70,917.11 : x
  2. Step 2: Convert to fraction form
    121,910.12/168,168.24 = 70,917.11/x
  3. Step 3: Cross multiply
    121,910.12x = 168,168.24 × 70,917.11
  4. Step 4: Simplify right side
    121,910.12x = 11,926,004,733.75
  5. Step 5: Solve for x
    x = 11,926,004,733.75/121,910.12
  6. Step 6: Final answer
    x = 97,826.21

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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.