Home / 137,014.42-189,081.21-80,426.74

Finding the Fourth Proportional to 137,014.42, 189,081.21 and 80,426.74

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Solution

The fourth proportional to 137,014.42, 189,081.21 and 80,426.74 is: 110,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,014.42 : 189,081.21 = 80,426.74 : x
  2. Step 2: Convert to fraction form
    137,014.42/189,081.21 = 80,426.74/x
  3. Step 3: Cross multiply
    137,014.42x = 189,081.21 × 80,426.74
  4. Step 4: Simplify right side
    137,014.42x = 15,207,185,315.56
  5. Step 5: Solve for x
    x = 15,207,185,315.56/137,014.42
  6. Step 6: Final answer
    x = 110,989.67

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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.