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Finding the Fourth Proportional to 199,990.84, 300,002.19 and 66,871.93

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Solution

The fourth proportional to 199,990.84, 300,002.19 and 66,871.93 is: 100,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,990.84 : 300,002.19 = 66,871.93 : x
  2. Step 2: Convert to fraction form
    199,990.84/300,002.19 = 66,871.93/x
  3. Step 3: Cross multiply
    199,990.84x = 300,002.19 × 66,871.93
  4. Step 4: Simplify right side
    199,990.84x = 20,061,725,449.53
  5. Step 5: Solve for x
    x = 20,061,725,449.53/199,990.84
  6. Step 6: Final answer
    x = 100,313.22

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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.