Home / 139,739,448.36-192,841,229.30-81,036,967.64

Finding the Fourth Proportional to 139,739,448.36, 192,841,229.30 and 81,036,967.64

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Solution

The fourth proportional to 139,739,448.36, 192,841,229.30 and 81,036,967.64 is: 111,831,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739,448.36 : 192,841,229.30 = 81,036,967.64 : x
  2. Step 2: Convert to fraction form
    139,739,448.36/192,841,229.30 = 81,036,967.64/x
  3. Step 3: Cross multiply
    139,739,448.36x = 192,841,229.30 × 81,036,967.64
  4. Step 4: Simplify right side
    139,739,448.36x = 15,627,268,458,441,920
  5. Step 5: Solve for x
    x = 15,627,268,458,441,920/139,739,448.36
  6. Step 6: Final answer
    x = 111,831,473.80

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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.