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Finding the Fourth Proportional to 128,357.00, 192,453.48 and 61,664.43

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Solution

The fourth proportional to 128,357.00, 192,453.48 and 61,664.43 is: 92,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,357.00 : 192,453.48 = 61,664.43 : x
  2. Step 2: Convert to fraction form
    128,357.00/192,453.48 = 61,664.43/x
  3. Step 3: Cross multiply
    128,357.00x = 192,453.48 × 61,664.43
  4. Step 4: Simplify right side
    128,357.00x = 11,867,534,145.72
  5. Step 5: Solve for x
    x = 11,867,534,145.72/128,357.00
  6. Step 6: Final answer
    x = 92,457.25

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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.