Home / 80,380,926.80-120,571,390.20-79,709,080.40

Finding the Fourth Proportional to 80,380,926.80, 120,571,390.20 and 79,709,080.40

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Solution

The fourth proportional to 80,380,926.80, 120,571,390.20 and 79,709,080.40 is: 119,563,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,380,926.80 : 120,571,390.20 = 79,709,080.40 : x
  2. Step 2: Convert to fraction form
    80,380,926.80/120,571,390.20 = 79,709,080.40/x
  3. Step 3: Cross multiply
    80,380,926.80x = 120,571,390.20 × 79,709,080.40
  4. Step 4: Simplify right side
    80,380,926.80x = 9,610,634,635,391,574
  5. Step 5: Solve for x
    x = 9,610,634,635,391,574/80,380,926.80
  6. Step 6: Final answer
    x = 119,563,620.60

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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.