Home / 166,381.92-249,431.42-72,817.76

Finding the Fourth Proportional to 166,381.92, 249,431.42 and 72,817.76

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Solution

The fourth proportional to 166,381.92, 249,431.42 and 72,817.76 is: 109,164.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,381.92 : 249,431.42 = 72,817.76 : x
  2. Step 2: Convert to fraction form
    166,381.92/249,431.42 = 72,817.76/x
  3. Step 3: Cross multiply
    166,381.92x = 249,431.42 × 72,817.76
  4. Step 4: Simplify right side
    166,381.92x = 18,163,037,278.02
  5. Step 5: Solve for x
    x = 18,163,037,278.02/166,381.92
  6. Step 6: Final answer
    x = 109,164.73

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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.