Home / 138,089,098.87-190,625,101.78-91,074,063.60

Finding the Fourth Proportional to 138,089,098.87, 190,625,101.78 and 91,074,063.60

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Solution

The fourth proportional to 138,089,098.87, 190,625,101.78 and 91,074,063.60 is: 125,723,194.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,089,098.87 : 190,625,101.78 = 91,074,063.60 : x
  2. Step 2: Convert to fraction form
    138,089,098.87/190,625,101.78 = 91,074,063.60/x
  3. Step 3: Cross multiply
    138,089,098.87x = 190,625,101.78 × 91,074,063.60
  4. Step 4: Simplify right side
    138,089,098.87x = 17,361,002,643,268,192
  5. Step 5: Solve for x
    x = 17,361,002,643,268,192/138,089,098.87
  6. Step 6: Final answer
    x = 125,723,194.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.