Home / 193,779.12-290,710.80-81,395.22

Finding the Fourth Proportional to 193,779.12, 290,710.80 and 81,395.22

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Solution

The fourth proportional to 193,779.12, 290,710.80 and 81,395.22 is: 122,110.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,779.12 : 290,710.80 = 81,395.22 : x
  2. Step 2: Convert to fraction form
    193,779.12/290,710.80 = 81,395.22/x
  3. Step 3: Cross multiply
    193,779.12x = 290,710.80 × 81,395.22
  4. Step 4: Simplify right side
    193,779.12x = 23,662,469,522.38
  5. Step 5: Solve for x
    x = 23,662,469,522.38/193,779.12
  6. Step 6: Final answer
    x = 122,110.52

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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.