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Finding the Fourth Proportional to 199,898.67, 299,746.13 and 66,731.07

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Solution

The fourth proportional to 199,898.67, 299,746.13 and 66,731.07 is: 100,062.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,898.67 : 299,746.13 = 66,731.07 : x
  2. Step 2: Convert to fraction form
    199,898.67/299,746.13 = 66,731.07/x
  3. Step 3: Cross multiply
    199,898.67x = 299,746.13 × 66,731.07
  4. Step 4: Simplify right side
    199,898.67x = 20,002,379,649.60
  5. Step 5: Solve for x
    x = 20,002,379,649.60/199,898.67
  6. Step 6: Final answer
    x = 100,062.59

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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.