Home / 207,979.60-311,969.40-67,738.23

Finding the Fourth Proportional to 207,979.60, 311,969.40 and 67,738.23

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Solution

The fourth proportional to 207,979.60, 311,969.40 and 67,738.23 is: 101,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,979.60 : 311,969.40 = 67,738.23 : x
  2. Step 2: Convert to fraction form
    207,979.60/311,969.40 = 67,738.23/x
  3. Step 3: Cross multiply
    207,979.60x = 311,969.40 × 67,738.23
  4. Step 4: Simplify right side
    207,979.60x = 21,132,254,970.16
  5. Step 5: Solve for x
    x = 21,132,254,970.16/207,979.60
  6. Step 6: Final answer
    x = 101,607.35

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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.