Home / 207,980.10-311,970.15-67,738.73

Finding the Fourth Proportional to 207,980.10, 311,970.15 and 67,738.73

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Solution

The fourth proportional to 207,980.10, 311,970.15 and 67,738.73 is: 101,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,980.10 : 311,970.15 = 67,738.73 : x
  2. Step 2: Convert to fraction form
    207,980.10/311,970.15 = 67,738.73/x
  3. Step 3: Cross multiply
    207,980.10x = 311,970.15 × 67,738.73
  4. Step 4: Simplify right side
    207,980.10x = 21,132,461,758.91
  5. Step 5: Solve for x
    x = 21,132,461,758.91/207,980.10
  6. Step 6: Final answer
    x = 101,608.10

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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.