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Finding the Fourth Proportional to 93,213.20, 139,819.80 and 51,222.80

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Solution

The fourth proportional to 93,213.20, 139,819.80 and 51,222.80 is: 76,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,213.20 : 139,819.80 = 51,222.80 : x
  2. Step 2: Convert to fraction form
    93,213.20/139,819.80 = 51,222.80/x
  3. Step 3: Cross multiply
    93,213.20x = 139,819.80 × 51,222.80
  4. Step 4: Simplify right side
    93,213.20x = 7,161,961,651.44
  5. Step 5: Solve for x
    x = 7,161,961,651.44/93,213.20
  6. Step 6: Final answer
    x = 76,834.20

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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.