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Finding the Fourth Proportional to 93,910.77, 140,529.43 and 81,303.89

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Solution

The fourth proportional to 93,910.77, 140,529.43 and 81,303.89 is: 121,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,910.77 : 140,529.43 = 81,303.89 : x
  2. Step 2: Convert to fraction form
    93,910.77/140,529.43 = 81,303.89/x
  3. Step 3: Cross multiply
    93,910.77x = 140,529.43 × 81,303.89
  4. Step 4: Simplify right side
    93,910.77x = 11,425,589,310.32
  5. Step 5: Solve for x
    x = 11,425,589,310.32/93,910.77
  6. Step 6: Final answer
    x = 121,664.31

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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.