Home / 151,181.88-208,639.60-86,661.85

Finding the Fourth Proportional to 151,181.88, 208,639.60 and 86,661.85

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Solution

The fourth proportional to 151,181.88, 208,639.60 and 86,661.85 is: 119,598.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,181.88 : 208,639.60 = 86,661.85 : x
  2. Step 2: Convert to fraction form
    151,181.88/208,639.60 = 86,661.85/x
  3. Step 3: Cross multiply
    151,181.88x = 208,639.60 × 86,661.85
  4. Step 4: Simplify right side
    151,181.88x = 18,081,093,372.21
  5. Step 5: Solve for x
    x = 18,081,093,372.21/151,181.88
  6. Step 6: Final answer
    x = 119,598.29

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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.