Home / 121,898.11-168,216.33-68,185.39

Finding the Fourth Proportional to 121,898.11, 168,216.33 and 68,185.39

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Solution

The fourth proportional to 121,898.11, 168,216.33 and 68,185.39 is: 94,094.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,898.11 : 168,216.33 = 68,185.39 : x
  2. Step 2: Convert to fraction form
    121,898.11/168,216.33 = 68,185.39/x
  3. Step 3: Cross multiply
    121,898.11x = 168,216.33 × 68,185.39
  4. Step 4: Simplify right side
    121,898.11x = 11,469,896,065.42
  5. Step 5: Solve for x
    x = 11,469,896,065.42/121,898.11
  6. Step 6: Final answer
    x = 94,094.13

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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.