Home / 78,144.30-117,231.06-25,556.64

Finding the Fourth Proportional to 78,144.30, 117,231.06 and 25,556.64

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Solution

The fourth proportional to 78,144.30, 117,231.06 and 25,556.64 is: 38,339.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,144.30 : 117,231.06 = 25,556.64 : x
  2. Step 2: Convert to fraction form
    78,144.30/117,231.06 = 25,556.64/x
  3. Step 3: Cross multiply
    78,144.30x = 117,231.06 × 25,556.64
  4. Step 4: Simplify right side
    78,144.30x = 2,996,031,997.24
  5. Step 5: Solve for x
    x = 2,996,031,997.24/78,144.30
  6. Step 6: Final answer
    x = 38,339.74

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1.5x scale

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.