Home / 138,699,760.80-191,534,331.60-103,831,917.60

Finding the Fourth Proportional to 138,699,760.80, 191,534,331.60 and 103,831,917.60

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Solution

The fourth proportional to 138,699,760.80, 191,534,331.60 and 103,831,917.60 is: 143,384,363.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,699,760.80 : 191,534,331.60 = 103,831,917.60 : x
  2. Step 2: Convert to fraction form
    138,699,760.80/191,534,331.60 = 103,831,917.60/x
  3. Step 3: Cross multiply
    138,699,760.80x = 191,534,331.60 × 103,831,917.60
  4. Step 4: Simplify right side
    138,699,760.80x = 19,887,376,936,262,276
  5. Step 5: Solve for x
    x = 19,887,376,936,262,276/138,699,760.80
  6. Step 6: Final answer
    x = 143,384,363.62

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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.