Home / 81,657,102.80-122,485,654.20-74,098,830.80

Finding the Fourth Proportional to 81,657,102.80, 122,485,654.20 and 74,098,830.80

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Solution

The fourth proportional to 81,657,102.80, 122,485,654.20 and 74,098,830.80 is: 111,148,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,102.80 : 122,485,654.20 = 74,098,830.80 : x
  2. Step 2: Convert to fraction form
    81,657,102.80/122,485,654.20 = 74,098,830.80/x
  3. Step 3: Cross multiply
    81,657,102.80x = 122,485,654.20 × 74,098,830.80
  4. Step 4: Simplify right side
    81,657,102.80x = 9,076,043,765,993,110
  5. Step 5: Solve for x
    x = 9,076,043,765,993,110/81,657,102.80
  6. Step 6: Final answer
    x = 111,148,246.20

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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.