Home / 128,529.52-192,833.69-57,511.94

Finding the Fourth Proportional to 128,529.52, 192,833.69 and 57,511.94

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Solution

The fourth proportional to 128,529.52, 192,833.69 and 57,511.94 is: 86,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,529.52 : 192,833.69 = 57,511.94 : x
  2. Step 2: Convert to fraction form
    128,529.52/192,833.69 = 57,511.94/x
  3. Step 3: Cross multiply
    128,529.52x = 192,833.69 × 57,511.94
  4. Step 4: Simplify right side
    128,529.52x = 11,090,239,603.97
  5. Step 5: Solve for x
    x = 11,090,239,603.97/128,529.52
  6. Step 6: Final answer
    x = 86,285.55

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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.