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Finding the Fourth Proportional to 93,309.40, 139,964.10 and 82,228.60

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Solution

The fourth proportional to 93,309.40, 139,964.10 and 82,228.60 is: 123,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,309.40 : 139,964.10 = 82,228.60 : x
  2. Step 2: Convert to fraction form
    93,309.40/139,964.10 = 82,228.60/x
  3. Step 3: Cross multiply
    93,309.40x = 139,964.10 × 82,228.60
  4. Step 4: Simplify right side
    93,309.40x = 11,509,051,993.26
  5. Step 5: Solve for x
    x = 11,509,051,993.26/93,309.40
  6. Step 6: Final answer
    x = 123,342.90

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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.