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Finding the Fourth Proportional to 199,915.04, 299,888.34 and 66,795.76

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Solution

The fourth proportional to 199,915.04, 299,888.34 and 66,795.76 is: 100,198.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,915.04 : 299,888.34 = 66,795.76 : x
  2. Step 2: Convert to fraction form
    199,915.04/299,888.34 = 66,795.76/x
  3. Step 3: Cross multiply
    199,915.04x = 299,888.34 × 66,795.76
  4. Step 4: Simplify right side
    199,915.04x = 20,031,267,752.02
  5. Step 5: Solve for x
    x = 20,031,267,752.02/199,915.04
  6. Step 6: Final answer
    x = 100,198.91

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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.