Home / 121,958.46-168,249.96-86,179.14

Finding the Fourth Proportional to 121,958.46, 168,249.96 and 86,179.14

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Solution

The fourth proportional to 121,958.46, 168,249.96 and 86,179.14 is: 118,889.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,958.46 : 168,249.96 = 86,179.14 : x
  2. Step 2: Convert to fraction form
    121,958.46/168,249.96 = 86,179.14/x
  3. Step 3: Cross multiply
    121,958.46x = 168,249.96 × 86,179.14
  4. Step 4: Simplify right side
    121,958.46x = 14,499,636,857.83
  5. Step 5: Solve for x
    x = 14,499,636,857.83/121,958.46
  6. Step 6: Final answer
    x = 118,889.96

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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.