Home / 112,399.20-168,571.80-64,911.60

Finding the Fourth Proportional to 112,399.20, 168,571.80 and 64,911.60

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Solution

The fourth proportional to 112,399.20, 168,571.80 and 64,911.60 is: 97,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,399.20 : 168,571.80 = 64,911.60 : x
  2. Step 2: Convert to fraction form
    112,399.20/168,571.80 = 64,911.60/x
  3. Step 3: Cross multiply
    112,399.20x = 168,571.80 × 64,911.60
  4. Step 4: Simplify right side
    112,399.20x = 10,942,265,252.88
  5. Step 5: Solve for x
    x = 10,942,265,252.88/112,399.20
  6. Step 6: Final answer
    x = 97,351.81

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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.