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Finding the Fourth Proportional to 93,296.80, 139,945.20 and 81,632.80

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Solution

The fourth proportional to 93,296.80, 139,945.20 and 81,632.80 is: 122,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,296.80 : 139,945.20 = 81,632.80 : x
  2. Step 2: Convert to fraction form
    93,296.80/139,945.20 = 81,632.80/x
  3. Step 3: Cross multiply
    93,296.80x = 139,945.20 × 81,632.80
  4. Step 4: Simplify right side
    93,296.80x = 11,424,118,522.56
  5. Step 5: Solve for x
    x = 11,424,118,522.56/93,296.80
  6. Step 6: Final answer
    x = 122,449.20

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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.