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Finding the Fourth Proportional to 178,482.79, 267,638.05 and 103,621.78

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Solution

The fourth proportional to 178,482.79, 267,638.05 and 103,621.78 is: 155,382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,482.79 : 267,638.05 = 103,621.78 : x
  2. Step 2: Convert to fraction form
    178,482.79/267,638.05 = 103,621.78/x
  3. Step 3: Cross multiply
    178,482.79x = 267,638.05 × 103,621.78
  4. Step 4: Simplify right side
    178,482.79x = 27,733,131,136.73
  5. Step 5: Solve for x
    x = 27,733,131,136.73/178,482.79
  6. Step 6: Final answer
    x = 155,382.66

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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.