Home / 82,762.20-124,289.10-80,137.80

Finding the Fourth Proportional to 82,762.20, 124,289.10 and 80,137.80

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Solution

The fourth proportional to 82,762.20, 124,289.10 and 80,137.80 is: 120,347.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,762.20 : 124,289.10 = 80,137.80 : x
  2. Step 2: Convert to fraction form
    82,762.20/124,289.10 = 80,137.80/x
  3. Step 3: Cross multiply
    82,762.20x = 124,289.10 × 80,137.80
  4. Step 4: Simplify right side
    82,762.20x = 9,960,255,037.98
  5. Step 5: Solve for x
    x = 9,960,255,037.98/82,762.20
  6. Step 6: Final answer
    x = 120,347.88

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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.