Home / 127,830.30-191,745.45-115,388.70

Finding the Fourth Proportional to 127,830.30, 191,745.45 and 115,388.70

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Solution

The fourth proportional to 127,830.30, 191,745.45 and 115,388.70 is: 173,083.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,830.30 : 191,745.45 = 115,388.70 : x
  2. Step 2: Convert to fraction form
    127,830.30/191,745.45 = 115,388.70/x
  3. Step 3: Cross multiply
    127,830.30x = 191,745.45 × 115,388.70
  4. Step 4: Simplify right side
    127,830.30x = 22,125,258,206.42
  5. Step 5: Solve for x
    x = 22,125,258,206.42/127,830.30
  6. Step 6: Final answer
    x = 173,083.05

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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.