Home / 80,219,844.90-120,133,522.98-72,456,199.02

Finding the Fourth Proportional to 80,219,844.90, 120,133,522.98 and 72,456,199.02

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Solution

The fourth proportional to 80,219,844.90, 120,133,522.98 and 72,456,199.02 is: 108,507,046.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,219,844.90 : 120,133,522.98 = 72,456,199.02 : x
  2. Step 2: Convert to fraction form
    80,219,844.90/120,133,522.98 = 72,456,199.02/x
  3. Step 3: Cross multiply
    80,219,844.90x = 120,133,522.98 × 72,456,199.02
  4. Step 4: Simplify right side
    80,219,844.90x = 8,704,418,450,012,623
  5. Step 5: Solve for x
    x = 8,704,418,450,012,623/80,219,844.90
  6. Step 6: Final answer
    x = 108,507,046.62

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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.