Home / 80,783.04-120,986.46-77,980.44

Finding the Fourth Proportional to 80,783.04, 120,986.46 and 77,980.44

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Solution

The fourth proportional to 80,783.04, 120,986.46 and 77,980.44 is: 116,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,783.04 : 120,986.46 = 77,980.44 : x
  2. Step 2: Convert to fraction form
    80,783.04/120,986.46 = 77,980.44/x
  3. Step 3: Cross multiply
    80,783.04x = 120,986.46 × 77,980.44
  4. Step 4: Simplify right side
    80,783.04x = 9,434,577,384.84
  5. Step 5: Solve for x
    x = 9,434,577,384.84/80,783.04
  6. Step 6: Final answer
    x = 116,789.09

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1.5x scale

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.