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Finding the Fourth Proportional to 166,573.71, 249,864.21 and 66,780.90

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Solution

The fourth proportional to 166,573.71, 249,864.21 and 66,780.90 is: 100,172.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,573.71 : 249,864.21 = 66,780.90 : x
  2. Step 2: Convert to fraction form
    166,573.71/249,864.21 = 66,780.90/x
  3. Step 3: Cross multiply
    166,573.71x = 249,864.21 × 66,780.90
  4. Step 4: Simplify right side
    166,573.71x = 16,686,156,821.59
  5. Step 5: Solve for x
    x = 16,686,156,821.59/166,573.71
  6. Step 6: Final answer
    x = 100,172.81

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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.