Home / 260,100.36-390,150.54-73,111.86

Finding the Fourth Proportional to 260,100.36, 390,150.54 and 73,111.86

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Solution

The fourth proportional to 260,100.36, 390,150.54 and 73,111.86 is: 109,667.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,100.36 : 390,150.54 = 73,111.86 : x
  2. Step 2: Convert to fraction form
    260,100.36/390,150.54 = 73,111.86/x
  3. Step 3: Cross multiply
    260,100.36x = 390,150.54 × 73,111.86
  4. Step 4: Simplify right side
    260,100.36x = 28,524,631,659.40
  5. Step 5: Solve for x
    x = 28,524,631,659.40/260,100.36
  6. Step 6: Final answer
    x = 109,667.79

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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.