Home / 205,138,520.80-307,446,507.60-83,832,920.80

Finding the Fourth Proportional to 205,138,520.80, 307,446,507.60 and 83,832,920.80

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Solution

The fourth proportional to 205,138,520.80, 307,446,507.60 and 83,832,920.80 is: 125,642,607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,138,520.80 : 307,446,507.60 = 83,832,920.80 : x
  2. Step 2: Convert to fraction form
    205,138,520.80/307,446,507.60 = 83,832,920.80/x
  3. Step 3: Cross multiply
    205,138,520.80x = 307,446,507.60 × 83,832,920.80
  4. Step 4: Simplify right side
    205,138,520.80x = 25,774,138,721,867,400
  5. Step 5: Solve for x
    x = 25,774,138,721,867,400/205,138,520.80
  6. Step 6: Final answer
    x = 125,642,607.84

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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.