Home / 137,621.06-189,872.20-80,247.40

Finding the Fourth Proportional to 137,621.06, 189,872.20 and 80,247.40

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Solution

The fourth proportional to 137,621.06, 189,872.20 and 80,247.40 is: 110,715.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,621.06 : 189,872.20 = 80,247.40 : x
  2. Step 2: Convert to fraction form
    137,621.06/189,872.20 = 80,247.40/x
  3. Step 3: Cross multiply
    137,621.06x = 189,872.20 × 80,247.40
  4. Step 4: Simplify right side
    137,621.06x = 15,236,750,382.28
  5. Step 5: Solve for x
    x = 15,236,750,382.28/137,621.06
  6. Step 6: Final answer
    x = 110,715.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.