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Finding the Fourth Proportional to 199,356.92, 299,159.88 and 81,028.22

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Solution

The fourth proportional to 199,356.92, 299,159.88 and 81,028.22 is: 121,592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,356.92 : 299,159.88 = 81,028.22 : x
  2. Step 2: Convert to fraction form
    199,356.92/299,159.88 = 81,028.22/x
  3. Step 3: Cross multiply
    199,356.92x = 299,159.88 × 81,028.22
  4. Step 4: Simplify right side
    199,356.92x = 24,240,392,571.81
  5. Step 5: Solve for x
    x = 24,240,392,571.81/199,356.92
  6. Step 6: Final answer
    x = 121,592.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.