Home / 208,591.10-287,749.75-131,981.09

Finding the Fourth Proportional to 208,591.10, 287,749.75 and 131,981.09

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Solution

The fourth proportional to 208,591.10, 287,749.75 and 131,981.09 is: 182,066.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,591.10 : 287,749.75 = 131,981.09 : x
  2. Step 2: Convert to fraction form
    208,591.10/287,749.75 = 131,981.09/x
  3. Step 3: Cross multiply
    208,591.10x = 287,749.75 × 131,981.09
  4. Step 4: Simplify right side
    208,591.10x = 37,977,524,992.32
  5. Step 5: Solve for x
    x = 37,977,524,992.32/208,591.10
  6. Step 6: Final answer
    x = 182,066.86

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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.