Home / 128,577.30-192,896.75-53,655.77

Finding the Fourth Proportional to 128,577.30, 192,896.75 and 53,655.77

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Solution

The fourth proportional to 128,577.30, 192,896.75 and 53,655.77 is: 80,496.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,577.30 : 192,896.75 = 53,655.77 : x
  2. Step 2: Convert to fraction form
    128,577.30/192,896.75 = 53,655.77/x
  3. Step 3: Cross multiply
    128,577.30x = 192,896.75 × 53,655.77
  4. Step 4: Simplify right side
    128,577.30x = 10,350,022,418.98
  5. Step 5: Solve for x
    x = 10,350,022,418.98/128,577.30
  6. Step 6: Final answer
    x = 80,496.50

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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.