Home / 259,596.70-389,407.20-82,117.60

Finding the Fourth Proportional to 259,596.70, 389,407.20 and 82,117.60

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Solution

The fourth proportional to 259,596.70, 389,407.20 and 82,117.60 is: 123,180.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,596.70 : 389,407.20 = 82,117.60 : x
  2. Step 2: Convert to fraction form
    259,596.70/389,407.20 = 82,117.60/x
  3. Step 3: Cross multiply
    259,596.70x = 389,407.20 × 82,117.60
  4. Step 4: Simplify right side
    259,596.70x = 31,977,184,686.72
  5. Step 5: Solve for x
    x = 31,977,184,686.72/259,596.70
  6. Step 6: Final answer
    x = 123,180.24

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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.