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Finding the Fourth Proportional to 199,290.30, 298,870.41 and 66,134.79

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Solution

The fourth proportional to 199,290.30, 298,870.41 and 66,134.79 is: 99,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,290.30 : 298,870.41 = 66,134.79 : x
  2. Step 2: Convert to fraction form
    199,290.30/298,870.41 = 66,134.79/x
  3. Step 3: Cross multiply
    199,290.30x = 298,870.41 × 66,134.79
  4. Step 4: Simplify right side
    199,290.30x = 19,765,731,802.56
  5. Step 5: Solve for x
    x = 19,765,731,802.56/199,290.30
  6. Step 6: Final answer
    x = 99,180.60

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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.