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Finding the Fourth Proportional to 178,423, 267,738.18 and 79,927

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Solution

The fourth proportional to 178,423, 267,738.18 and 79,927 is: 119,936.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,423 : 267,738.18 = 79,927 : x
  2. Step 2: Convert to fraction form
    178,423/267,738.18 = 79,927/x
  3. Step 3: Cross multiply
    178,423x = 267,738.18 × 79,927
  4. Step 4: Simplify right side
    178,423x = 21,399,509,512.86
  5. Step 5: Solve for x
    x = 21,399,509,512.86/178,423
  6. Step 6: Final answer
    x = 119,936.94

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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.