Home / 128,008.07-192,034.63-43,748.43

Finding the Fourth Proportional to 128,008.07, 192,034.63 and 43,748.43

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Solution

The fourth proportional to 128,008.07, 192,034.63 and 43,748.43 is: 65,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,008.07 : 192,034.63 = 43,748.43 : x
  2. Step 2: Convert to fraction form
    128,008.07/192,034.63 = 43,748.43/x
  3. Step 3: Cross multiply
    128,008.07x = 192,034.63 × 43,748.43
  4. Step 4: Simplify right side
    128,008.07x = 8,401,212,902.69
  5. Step 5: Solve for x
    x = 8,401,212,902.69/128,008.07
  6. Step 6: Final answer
    x = 65,630.34

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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.