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Finding the Fourth Proportional to 178,040.86, 267,060.46 and 72,859.84

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Solution

The fourth proportional to 178,040.86, 267,060.46 and 72,859.84 is: 109,289.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,040.86 : 267,060.46 = 72,859.84 : x
  2. Step 2: Convert to fraction form
    178,040.86/267,060.46 = 72,859.84/x
  3. Step 3: Cross multiply
    178,040.86x = 267,060.46 × 72,859.84
  4. Step 4: Simplify right side
    178,040.86x = 19,457,982,385.93
  5. Step 5: Solve for x
    x = 19,457,982,385.93/178,040.86
  6. Step 6: Final answer
    x = 109,289.42

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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.