Home / 81,449,128.20-122,173,692.30-73,229,507.40

Finding the Fourth Proportional to 81,449,128.20, 122,173,692.30 and 73,229,507.40

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Solution

The fourth proportional to 81,449,128.20, 122,173,692.30 and 73,229,507.40 is: 109,844,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449,128.20 : 122,173,692.30 = 73,229,507.40 : x
  2. Step 2: Convert to fraction form
    81,449,128.20/122,173,692.30 = 73,229,507.40/x
  3. Step 3: Cross multiply
    81,449,128.20x = 122,173,692.30 × 73,229,507.40
  4. Step 4: Simplify right side
    81,449,128.20x = 8,946,719,304,368,174
  5. Step 5: Solve for x
    x = 8,946,719,304,368,174/81,449,128.20
  6. Step 6: Final answer
    x = 109,844,261.10

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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.