Home / 138,783,964.20-208,026,647.10-52,489,026.60

Finding the Fourth Proportional to 138,783,964.20, 208,026,647.10 and 52,489,026.60

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Solution

The fourth proportional to 138,783,964.20, 208,026,647.10 and 52,489,026.60 is: 78,677,073.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,783,964.20 : 208,026,647.10 = 52,489,026.60 : x
  2. Step 2: Convert to fraction form
    138,783,964.20/208,026,647.10 = 52,489,026.60/x
  3. Step 3: Cross multiply
    138,783,964.20x = 208,026,647.10 × 52,489,026.60
  4. Step 4: Simplify right side
    138,783,964.20x = 10,919,116,213,140,712
  5. Step 5: Solve for x
    x = 10,919,116,213,140,712/138,783,964.20
  6. Step 6: Final answer
    x = 78,677,073.94

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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.