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Finding the Fourth Proportional to 178,683.08, 267,965.10 and 72,039.48

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Solution

The fourth proportional to 178,683.08, 267,965.10 and 72,039.48 is: 108,035.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,683.08 : 267,965.10 = 72,039.48 : x
  2. Step 2: Convert to fraction form
    178,683.08/267,965.10 = 72,039.48/x
  3. Step 3: Cross multiply
    178,683.08x = 267,965.10 × 72,039.48
  4. Step 4: Simplify right side
    178,683.08x = 19,304,066,462.15
  5. Step 5: Solve for x
    x = 19,304,066,462.15/178,683.08
  6. Step 6: Final answer
    x = 108,035.23

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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.