Home / 78,157.09-117,246.57-25,556.10

Finding the Fourth Proportional to 78,157.09, 117,246.57 and 25,556.10

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Solution

The fourth proportional to 78,157.09, 117,246.57 and 25,556.10 is: 38,337.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157.09 : 117,246.57 = 25,556.10 : x
  2. Step 2: Convert to fraction form
    78,157.09/117,246.57 = 25,556.10/x
  3. Step 3: Cross multiply
    78,157.09x = 117,246.57 × 25,556.10
  4. Step 4: Simplify right side
    78,157.09x = 2,996,365,067.58
  5. Step 5: Solve for x
    x = 2,996,365,067.58/78,157.09
  6. Step 6: Final answer
    x = 38,337.73

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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.