Home / 205,558,625-308,418,638.88-90,462,430.64

Finding the Fourth Proportional to 205,558,625, 308,418,638.88 and 90,462,430.64

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Solution

The fourth proportional to 205,558,625, 308,418,638.88 and 90,462,430.64 is: 135,729,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,558,625 : 308,418,638.88 = 90,462,430.64 : x
  2. Step 2: Convert to fraction form
    205,558,625/308,418,638.88 = 90,462,430.64/x
  3. Step 3: Cross multiply
    205,558,625x = 308,418,638.88 × 90,462,430.64
  4. Step 4: Simplify right side
    205,558,625x = 27,900,299,727,765,208
  5. Step 5: Solve for x
    x = 27,900,299,727,765,208/205,558,625
  6. Step 6: Final answer
    x = 135,729,161.10

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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.