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Finding the Fourth Proportional to 178,683.57, 267,965.85 and 72,039.98

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Solution

The fourth proportional to 178,683.57, 267,965.85 and 72,039.98 is: 108,035.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,683.57 : 267,965.85 = 72,039.98 : x
  2. Step 2: Convert to fraction form
    178,683.57/267,965.85 = 72,039.98/x
  3. Step 3: Cross multiply
    178,683.57x = 267,965.85 × 72,039.98
  4. Step 4: Simplify right side
    178,683.57x = 19,304,254,474.68
  5. Step 5: Solve for x
    x = 19,304,254,474.68/178,683.57
  6. Step 6: Final answer
    x = 108,035.98

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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.