Home / 128,176.26-192,263.78-71,223.34

Finding the Fourth Proportional to 128,176.26, 192,263.78 and 71,223.34

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Solution

The fourth proportional to 128,176.26, 192,263.78 and 71,223.34 is: 106,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,176.26 : 192,263.78 = 71,223.34 : x
  2. Step 2: Convert to fraction form
    128,176.26/192,263.78 = 71,223.34/x
  3. Step 3: Cross multiply
    128,176.26x = 192,263.78 × 71,223.34
  4. Step 4: Simplify right side
    128,176.26x = 13,693,668,572.63
  5. Step 5: Solve for x
    x = 13,693,668,572.63/128,176.26
  6. Step 6: Final answer
    x = 106,834.67

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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.