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Finding the Fourth Proportional to 199,395.97, 299,150.45 and 81,152.17

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Solution

The fourth proportional to 199,395.97, 299,150.45 and 81,152.17 is: 121,751.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,395.97 : 299,150.45 = 81,152.17 : x
  2. Step 2: Convert to fraction form
    199,395.97/299,150.45 = 81,152.17/x
  3. Step 3: Cross multiply
    199,395.97x = 299,150.45 × 81,152.17
  4. Step 4: Simplify right side
    199,395.97x = 24,276,708,173.98
  5. Step 5: Solve for x
    x = 24,276,708,173.98/199,395.97
  6. Step 6: Final answer
    x = 121,751.25

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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.