Home / 207,980.60-311,970.90-67,739.23

Finding the Fourth Proportional to 207,980.60, 311,970.90 and 67,739.23

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Solution

The fourth proportional to 207,980.60, 311,970.90 and 67,739.23 is: 101,608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,980.60 : 311,970.90 = 67,739.23 : x
  2. Step 2: Convert to fraction form
    207,980.60/311,970.90 = 67,739.23/x
  3. Step 3: Cross multiply
    207,980.60x = 311,970.90 × 67,739.23
  4. Step 4: Simplify right side
    207,980.60x = 21,132,668,548.41
  5. Step 5: Solve for x
    x = 21,132,668,548.41/207,980.60
  6. Step 6: Final answer
    x = 101,608.85

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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.