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Finding the Fourth Proportional to 166,472.61, 249,774.53 and 72,912.75

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Solution

The fourth proportional to 166,472.61, 249,774.53 and 72,912.75 is: 109,397.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,472.61 : 249,774.53 = 72,912.75 : x
  2. Step 2: Convert to fraction form
    166,472.61/249,774.53 = 72,912.75/x
  3. Step 3: Cross multiply
    166,472.61x = 249,774.53 × 72,912.75
  4. Step 4: Simplify right side
    166,472.61x = 18,211,747,497.69
  5. Step 5: Solve for x
    x = 18,211,747,497.69/166,472.61
  6. Step 6: Final answer
    x = 109,397.86

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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.