Home / 128,240.46-192,360.69-34,743.78

Finding the Fourth Proportional to 128,240.46, 192,360.69 and 34,743.78

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Solution

The fourth proportional to 128,240.46, 192,360.69 and 34,743.78 is: 52,115.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,240.46 : 192,360.69 = 34,743.78 : x
  2. Step 2: Convert to fraction form
    128,240.46/192,360.69 = 34,743.78/x
  3. Step 3: Cross multiply
    128,240.46x = 192,360.69 × 34,743.78
  4. Step 4: Simplify right side
    128,240.46x = 6,683,337,494.01
  5. Step 5: Solve for x
    x = 6,683,337,494.01/128,240.46
  6. Step 6: Final answer
    x = 52,115.67

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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.