Home / 128,634.37-192,848.49-61,132.52

Finding the Fourth Proportional to 128,634.37, 192,848.49 and 61,132.52

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Solution

The fourth proportional to 128,634.37, 192,848.49 and 61,132.52 is: 91,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,634.37 : 192,848.49 = 61,132.52 : x
  2. Step 2: Convert to fraction form
    128,634.37/192,848.49 = 61,132.52/x
  3. Step 3: Cross multiply
    128,634.37x = 192,848.49 × 61,132.52
  4. Step 4: Simplify right side
    128,634.37x = 11,789,314,654.02
  5. Step 5: Solve for x
    x = 11,789,314,654.02/128,634.37
  6. Step 6: Final answer
    x = 91,649.80

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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.