Home / 122,828.20-183,804.90-85,211.80

Finding the Fourth Proportional to 122,828.20, 183,804.90 and 85,211.80

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Solution

The fourth proportional to 122,828.20, 183,804.90 and 85,211.80 is: 127,514.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,828.20 : 183,804.90 = 85,211.80 : x
  2. Step 2: Convert to fraction form
    122,828.20/183,804.90 = 85,211.80/x
  3. Step 3: Cross multiply
    122,828.20x = 183,804.90 × 85,211.80
  4. Step 4: Simplify right side
    122,828.20x = 15,662,346,377.82
  5. Step 5: Solve for x
    x = 15,662,346,377.82/122,828.20
  6. Step 6: Final answer
    x = 127,514.25

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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.