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Finding the Fourth Proportional to 93,640.80, 140,461.20 and 89,752.80

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Solution

The fourth proportional to 93,640.80, 140,461.20 and 89,752.80 is: 134,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,640.80 : 140,461.20 = 89,752.80 : x
  2. Step 2: Convert to fraction form
    93,640.80/140,461.20 = 89,752.80/x
  3. Step 3: Cross multiply
    93,640.80x = 140,461.20 × 89,752.80
  4. Step 4: Simplify right side
    93,640.80x = 12,606,785,991.36
  5. Step 5: Solve for x
    x = 12,606,785,991.36/93,640.80
  6. Step 6: Final answer
    x = 134,629.20

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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.