Home / 110,181.07-165,292.34-78,512.57

Finding the Fourth Proportional to 110,181.07, 165,292.34 and 78,512.57

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Solution

The fourth proportional to 110,181.07, 165,292.34 and 78,512.57 is: 117,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,181.07 : 165,292.34 = 78,512.57 : x
  2. Step 2: Convert to fraction form
    110,181.07/165,292.34 = 78,512.57/x
  3. Step 3: Cross multiply
    110,181.07x = 165,292.34 × 78,512.57
  4. Step 4: Simplify right side
    110,181.07x = 12,977,525,195.69
  5. Step 5: Solve for x
    x = 12,977,525,195.69/110,181.07
  6. Step 6: Final answer
    x = 117,783.62

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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.