Home / 109,023.38-150,409.55-80,411.72

Finding the Fourth Proportional to 109,023.38, 150,409.55 and 80,411.72

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Solution

The fourth proportional to 109,023.38, 150,409.55 and 80,411.72 is: 110,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,023.38 : 150,409.55 = 80,411.72 : x
  2. Step 2: Convert to fraction form
    109,023.38/150,409.55 = 80,411.72/x
  3. Step 3: Cross multiply
    109,023.38x = 150,409.55 × 80,411.72
  4. Step 4: Simplify right side
    109,023.38x = 12,094,690,217.87
  5. Step 5: Solve for x
    x = 12,094,690,217.87/109,023.38
  6. Step 6: Final answer
    x = 110,936.67

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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.