Home / 112,669.20-168,976.80-65,181.60

Finding the Fourth Proportional to 112,669.20, 168,976.80 and 65,181.60

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Solution

The fourth proportional to 112,669.20, 168,976.80 and 65,181.60 is: 97,756.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,669.20 : 168,976.80 = 65,181.60 : x
  2. Step 2: Convert to fraction form
    112,669.20/168,976.80 = 65,181.60/x
  3. Step 3: Cross multiply
    112,669.20x = 168,976.80 × 65,181.60
  4. Step 4: Simplify right side
    112,669.20x = 11,014,178,186.88
  5. Step 5: Solve for x
    x = 11,014,178,186.88/112,669.20
  6. Step 6: Final answer
    x = 97,756.78

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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.