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Finding the Fourth Proportional to 199,962.86, 299,881.94 and 66,812.06

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Solution

The fourth proportional to 199,962.86, 299,881.94 and 66,812.06 is: 100,197.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,962.86 : 299,881.94 = 66,812.06 : x
  2. Step 2: Convert to fraction form
    199,962.86/299,881.94 = 66,812.06/x
  3. Step 3: Cross multiply
    199,962.86x = 299,881.94 × 66,812.06
  4. Step 4: Simplify right side
    199,962.86x = 20,035,730,583.84
  5. Step 5: Solve for x
    x = 20,035,730,583.84/199,962.86
  6. Step 6: Final answer
    x = 100,197.26

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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.