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Finding the Fourth Proportional to 102,915.20, 154,372.80 and 36,354.80

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Solution

The fourth proportional to 102,915.20, 154,372.80 and 36,354.80 is: 54,532.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,915.20 : 154,372.80 = 36,354.80 : x
  2. Step 2: Convert to fraction form
    102,915.20/154,372.80 = 36,354.80/x
  3. Step 3: Cross multiply
    102,915.20x = 154,372.80 × 36,354.80
  4. Step 4: Simplify right side
    102,915.20x = 5,612,192,269.44
  5. Step 5: Solve for x
    x = 5,612,192,269.44/102,915.20
  6. Step 6: Final answer
    x = 54,532.20

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1.5x scale

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.