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Finding the Fourth Proportional to 121,932.54, 168,282.36 and 74,183.04

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Solution

The fourth proportional to 121,932.54, 168,282.36 and 74,183.04 is: 102,382.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,932.54 : 168,282.36 = 74,183.04 : x
  2. Step 2: Convert to fraction form
    121,932.54/168,282.36 = 74,183.04/x
  3. Step 3: Cross multiply
    121,932.54x = 168,282.36 × 74,183.04
  4. Step 4: Simplify right side
    121,932.54x = 12,483,697,043.17
  5. Step 5: Solve for x
    x = 12,483,697,043.17/121,932.54
  6. Step 6: Final answer
    x = 102,382.00

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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.