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Finding the Fourth Proportional to 188,366.31, 259,749.99 and 131,070.56

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Solution

The fourth proportional to 188,366.31, 259,749.99 and 131,070.56 is: 180,741.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,366.31 : 259,749.99 = 131,070.56 : x
  2. Step 2: Convert to fraction form
    188,366.31/259,749.99 = 131,070.56/x
  3. Step 3: Cross multiply
    188,366.31x = 259,749.99 × 131,070.56
  4. Step 4: Simplify right side
    188,366.31x = 34,045,575,350.54
  5. Step 5: Solve for x
    x = 34,045,575,350.54/188,366.31
  6. Step 6: Final answer
    x = 180,741.32

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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.