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Finding the Fourth Proportional to 199,925.84, 299,789.88 and 66,760.40

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Solution

The fourth proportional to 199,925.84, 299,789.88 and 66,760.40 is: 100,107.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,925.84 : 299,789.88 = 66,760.40 : x
  2. Step 2: Convert to fraction form
    199,925.84/299,789.88 = 66,760.40/x
  3. Step 3: Cross multiply
    199,925.84x = 299,789.88 × 66,760.40
  4. Step 4: Simplify right side
    199,925.84x = 20,014,092,304.75
  5. Step 5: Solve for x
    x = 20,014,092,304.75/199,925.84
  6. Step 6: Final answer
    x = 100,107.58

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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.