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Finding the Fourth Proportional to 93,093.80, 139,640.70 and 90,906.80

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Solution

The fourth proportional to 93,093.80, 139,640.70 and 90,906.80 is: 136,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,093.80 : 139,640.70 = 90,906.80 : x
  2. Step 2: Convert to fraction form
    93,093.80/139,640.70 = 90,906.80/x
  3. Step 3: Cross multiply
    93,093.80x = 139,640.70 × 90,906.80
  4. Step 4: Simplify right side
    93,093.80x = 12,694,289,186.76
  5. Step 5: Solve for x
    x = 12,694,289,186.76/93,093.80
  6. Step 6: Final answer
    x = 136,360.20

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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.