Home / 259,731.06-389,639.52-91,207.56

Finding the Fourth Proportional to 259,731.06, 389,639.52 and 91,207.56

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Solution

The fourth proportional to 259,731.06, 389,639.52 and 91,207.56 is: 136,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,731.06 : 389,639.52 = 91,207.56 : x
  2. Step 2: Convert to fraction form
    259,731.06/389,639.52 = 91,207.56/x
  3. Step 3: Cross multiply
    259,731.06x = 389,639.52 × 91,207.56
  4. Step 4: Simplify right side
    259,731.06x = 35,538,069,898.77
  5. Step 5: Solve for x
    x = 35,538,069,898.77/259,731.06
  6. Step 6: Final answer
    x = 136,826.42

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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.