Home / 128,801.25-193,320.77-92,815.06

Finding the Fourth Proportional to 128,801.25, 193,320.77 and 92,815.06

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Solution

The fourth proportional to 128,801.25, 193,320.77 and 92,815.06 is: 139,308.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,801.25 : 193,320.77 = 92,815.06 : x
  2. Step 2: Convert to fraction form
    128,801.25/193,320.77 = 92,815.06/x
  3. Step 3: Cross multiply
    128,801.25x = 193,320.77 × 92,815.06
  4. Step 4: Simplify right side
    128,801.25x = 17,943,078,866.80
  5. Step 5: Solve for x
    x = 17,943,078,866.80/128,801.25
  6. Step 6: Final answer
    x = 139,308.27

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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.