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Finding the Fourth Proportional to 199,998.47, 299,997.98 and 81,669.80

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Solution

The fourth proportional to 199,998.47, 299,997.98 and 81,669.80 is: 122,504.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,998.47 : 299,997.98 = 81,669.80 : x
  2. Step 2: Convert to fraction form
    199,998.47/299,997.98 = 81,669.80/x
  3. Step 3: Cross multiply
    199,998.47x = 299,997.98 × 81,669.80
  4. Step 4: Simplify right side
    199,998.47x = 24,500,775,674.91
  5. Step 5: Solve for x
    x = 24,500,775,674.91/199,998.47
  6. Step 6: Final answer
    x = 122,504.82

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1.5x scale

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.