Home / 133,058,987.80-199,588,481.70-81,774,712.60

Finding the Fourth Proportional to 133,058,987.80, 199,588,481.70 and 81,774,712.60

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Solution

The fourth proportional to 133,058,987.80, 199,588,481.70 and 81,774,712.60 is: 122,662,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,058,987.80 : 199,588,481.70 = 81,774,712.60 : x
  2. Step 2: Convert to fraction form
    133,058,987.80/199,588,481.70 = 81,774,712.60/x
  3. Step 3: Cross multiply
    133,058,987.80x = 199,588,481.70 × 81,774,712.60
  4. Step 4: Simplify right side
    133,058,987.80x = 16,321,290,729,287,858
  5. Step 5: Solve for x
    x = 16,321,290,729,287,858/133,058,987.80
  6. Step 6: Final answer
    x = 122,662,068.90

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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.