Home / 138,783,966.20-208,026,650.10-52,489,028.60

Finding the Fourth Proportional to 138,783,966.20, 208,026,650.10 and 52,489,028.60

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Solution

The fourth proportional to 138,783,966.20, 208,026,650.10 and 52,489,028.60 is: 78,677,076.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,783,966.20 : 208,026,650.10 = 52,489,028.60 : x
  2. Step 2: Convert to fraction form
    138,783,966.20/208,026,650.10 = 52,489,028.60/x
  3. Step 3: Cross multiply
    138,783,966.20x = 208,026,650.10 × 52,489,028.60
  4. Step 4: Simplify right side
    138,783,966.20x = 10,919,116,786,661,092
  5. Step 5: Solve for x
    x = 10,919,116,786,661,092/138,783,966.20
  6. Step 6: Final answer
    x = 78,677,076.94

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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.