Home / 138,699,620.80-191,534,138.40-103,831,777.60

Finding the Fourth Proportional to 138,699,620.80, 191,534,138.40 and 103,831,777.60

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Solution

The fourth proportional to 138,699,620.80, 191,534,138.40 and 103,831,777.60 is: 143,384,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,699,620.80 : 191,534,138.40 = 103,831,777.60 : x
  2. Step 2: Convert to fraction form
    138,699,620.80/191,534,138.40 = 103,831,777.60/x
  3. Step 3: Cross multiply
    138,699,620.80x = 191,534,138.40 × 103,831,777.60
  4. Step 4: Simplify right side
    138,699,620.80x = 19,887,330,061,156,420
  5. Step 5: Solve for x
    x = 19,887,330,061,156,420/138,699,620.80
  6. Step 6: Final answer
    x = 143,384,170.39

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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.