Home / 259,106.50-388,659.75-72,122.86

Finding the Fourth Proportional to 259,106.50, 388,659.75 and 72,122.86

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Solution

The fourth proportional to 259,106.50, 388,659.75 and 72,122.86 is: 108,184.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,106.50 : 388,659.75 = 72,122.86 : x
  2. Step 2: Convert to fraction form
    259,106.50/388,659.75 = 72,122.86/x
  3. Step 3: Cross multiply
    259,106.50x = 388,659.75 × 72,122.86
  4. Step 4: Simplify right side
    259,106.50x = 28,031,252,736.89
  5. Step 5: Solve for x
    x = 28,031,252,736.89/259,106.50
  6. Step 6: Final answer
    x = 108,184.29

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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.