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Finding the Fourth Proportional to 165,887,998.80, 248,831,998.20 and 80,953,342.80

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Solution

The fourth proportional to 165,887,998.80, 248,831,998.20 and 80,953,342.80 is: 121,430,014.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,887,998.80 : 248,831,998.20 = 80,953,342.80 : x
  2. Step 2: Convert to fraction form
    165,887,998.80/248,831,998.20 = 80,953,342.80/x
  3. Step 3: Cross multiply
    165,887,998.80x = 248,831,998.20 × 80,953,342.80
  4. Step 4: Simplify right side
    165,887,998.80x = 20,143,782,049,893,580
  5. Step 5: Solve for x
    x = 20,143,782,049,893,580/165,887,998.80
  6. Step 6: Final answer
    x = 121,430,014.20

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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.