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Finding the Fourth Proportional to 166,638.53, 249,956.62 and 66,797.28

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Solution

The fourth proportional to 166,638.53, 249,956.62 and 66,797.28 is: 100,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,638.53 : 249,956.62 = 66,797.28 : x
  2. Step 2: Convert to fraction form
    166,638.53/249,956.62 = 66,797.28/x
  3. Step 3: Cross multiply
    166,638.53x = 249,956.62 × 66,797.28
  4. Step 4: Simplify right side
    166,638.53x = 16,696,422,167.00
  5. Step 5: Solve for x
    x = 16,696,422,167.00/166,638.53
  6. Step 6: Final answer
    x = 100,195.45

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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.