Home / 259,676.12-389,557.24-91,152.72

Finding the Fourth Proportional to 259,676.12, 389,557.24 and 91,152.72

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Solution

The fourth proportional to 259,676.12, 389,557.24 and 91,152.72 is: 136,744.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,676.12 : 389,557.24 = 91,152.72 : x
  2. Step 2: Convert to fraction form
    259,676.12/389,557.24 = 91,152.72/x
  3. Step 3: Cross multiply
    259,676.12x = 389,557.24 × 91,152.72
  4. Step 4: Simplify right side
    259,676.12x = 35,509,202,021.69
  5. Step 5: Solve for x
    x = 35,509,202,021.69/259,676.12
  6. Step 6: Final answer
    x = 136,744.20

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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.