Home / 81,480,203.70-122,220,305.55-72,410,277.30

Finding the Fourth Proportional to 81,480,203.70, 122,220,305.55 and 72,410,277.30

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Solution

The fourth proportional to 81,480,203.70, 122,220,305.55 and 72,410,277.30 is: 108,615,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,480,203.70 : 122,220,305.55 = 72,410,277.30 : x
  2. Step 2: Convert to fraction form
    81,480,203.70/122,220,305.55 = 72,410,277.30/x
  3. Step 3: Cross multiply
    81,480,203.70x = 122,220,305.55 × 72,410,277.30
  4. Step 4: Simplify right side
    81,480,203.70x = 8,850,006,216,566,228
  5. Step 5: Solve for x
    x = 8,850,006,216,566,228/81,480,203.70
  6. Step 6: Final answer
    x = 108,615,415.95

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Similar ratio
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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.