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Finding the Fourth Proportional to 178,687.48, 267,680.76 and 103,649.98

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Solution

The fourth proportional to 178,687.48, 267,680.76 and 103,649.98 is: 155,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,687.48 : 267,680.76 = 103,649.98 : x
  2. Step 2: Convert to fraction form
    178,687.48/267,680.76 = 103,649.98/x
  3. Step 3: Cross multiply
    178,687.48x = 267,680.76 × 103,649.98
  4. Step 4: Simplify right side
    178,687.48x = 27,745,105,420.38
  5. Step 5: Solve for x
    x = 27,745,105,420.38/178,687.48
  6. Step 6: Final answer
    x = 155,271.68

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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.