Home / 199,171.44-274,774.32-138,777.12

Finding the Fourth Proportional to 199,171.44, 274,774.32 and 138,777.12

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Solution

The fourth proportional to 199,171.44, 274,774.32 and 138,777.12 is: 191,455.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,171.44 : 274,774.32 = 138,777.12 : x
  2. Step 2: Convert to fraction form
    199,171.44/274,774.32 = 138,777.12/x
  3. Step 3: Cross multiply
    199,171.44x = 274,774.32 × 138,777.12
  4. Step 4: Simplify right side
    199,171.44x = 38,132,388,779.56
  5. Step 5: Solve for x
    x = 38,132,388,779.56/199,171.44
  6. Step 6: Final answer
    x = 191,455.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.