Home / 128,178.26-192,266.78-71,225.34

Finding the Fourth Proportional to 128,178.26, 192,266.78 and 71,225.34

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Solution

The fourth proportional to 128,178.26, 192,266.78 and 71,225.34 is: 106,837.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,178.26 : 192,266.78 = 71,225.34 : x
  2. Step 2: Convert to fraction form
    128,178.26/192,266.78 = 71,225.34/x
  3. Step 3: Cross multiply
    128,178.26x = 192,266.78 × 71,225.34
  4. Step 4: Simplify right side
    128,178.26x = 13,694,266,776.21
  5. Step 5: Solve for x
    x = 13,694,266,776.21/128,178.26
  6. Step 6: Final answer
    x = 106,837.67

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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.