Home / 78,161.09-117,258.03-25,566.47

Finding the Fourth Proportional to 78,161.09, 117,258.03 and 25,566.47

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Solution

The fourth proportional to 78,161.09, 117,258.03 and 25,566.47 is: 38,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.09 : 117,258.03 = 25,566.47 : x
  2. Step 2: Convert to fraction form
    78,161.09/117,258.03 = 25,566.47/x
  3. Step 3: Cross multiply
    78,161.09x = 117,258.03 × 25,566.47
  4. Step 4: Simplify right side
    78,161.09x = 2,997,873,759.68
  5. Step 5: Solve for x
    x = 2,997,873,759.68/78,161.09
  6. Step 6: Final answer
    x = 38,355.07

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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.