Home / 260,099.58-390,370.81-102,438.75

Finding the Fourth Proportional to 260,099.58, 390,370.81 and 102,438.75

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Solution

The fourth proportional to 260,099.58, 390,370.81 and 102,438.75 is: 153,745.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,099.58 : 390,370.81 = 102,438.75 : x
  2. Step 2: Convert to fraction form
    260,099.58/390,370.81 = 102,438.75/x
  3. Step 3: Cross multiply
    260,099.58x = 390,370.81 × 102,438.75
  4. Step 4: Simplify right side
    260,099.58x = 39,989,097,556.79
  5. Step 5: Solve for x
    x = 39,989,097,556.79/260,099.58
  6. Step 6: Final answer
    x = 153,745.34

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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.