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Finding the Fourth Proportional to 166,745.13, 249,938.31 and 72,019.89

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Solution

The fourth proportional to 166,745.13, 249,938.31 and 72,019.89 is: 107,952.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,745.13 : 249,938.31 = 72,019.89 : x
  2. Step 2: Convert to fraction form
    166,745.13/249,938.31 = 72,019.89/x
  3. Step 3: Cross multiply
    166,745.13x = 249,938.31 × 72,019.89
  4. Step 4: Simplify right side
    166,745.13x = 18,000,529,592.99
  5. Step 5: Solve for x
    x = 18,000,529,592.99/166,745.13
  6. Step 6: Final answer
    x = 107,952.36

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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.