Home / 260,110.24-390,121.04-73,078

Finding the Fourth Proportional to 260,110.24, 390,121.04 and 73,078

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Solution

The fourth proportional to 260,110.24, 390,121.04 and 73,078 is: 109,604.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,110.24 : 390,121.04 = 73,078 : x
  2. Step 2: Convert to fraction form
    260,110.24/390,121.04 = 73,078/x
  3. Step 3: Cross multiply
    260,110.24x = 390,121.04 × 73,078
  4. Step 4: Simplify right side
    260,110.24x = 28,509,265,361.12
  5. Step 5: Solve for x
    x = 28,509,265,361.12/260,110.24
  6. Step 6: Final answer
    x = 109,604.55

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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.