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Finding the Fourth Proportional to 166,429.78, 249,644.70 and 55,621.78

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Solution

The fourth proportional to 166,429.78, 249,644.70 and 55,621.78 is: 83,432.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,429.78 : 249,644.70 = 55,621.78 : x
  2. Step 2: Convert to fraction form
    166,429.78/249,644.70 = 55,621.78/x
  3. Step 3: Cross multiply
    166,429.78x = 249,644.70 × 55,621.78
  4. Step 4: Simplify right side
    166,429.78x = 13,885,682,581.57
  5. Step 5: Solve for x
    x = 13,885,682,581.57/166,429.78
  6. Step 6: Final answer
    x = 83,432.68

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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.