Home / 128,500.82-192,750.08-100,444.46

Finding the Fourth Proportional to 128,500.82, 192,750.08 and 100,444.46

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Solution

The fourth proportional to 128,500.82, 192,750.08 and 100,444.46 is: 150,665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,500.82 : 192,750.08 = 100,444.46 : x
  2. Step 2: Convert to fraction form
    128,500.82/192,750.08 = 100,444.46/x
  3. Step 3: Cross multiply
    128,500.82x = 192,750.08 × 100,444.46
  4. Step 4: Simplify right side
    128,500.82x = 19,360,677,700.56
  5. Step 5: Solve for x
    x = 19,360,677,700.56/128,500.82
  6. Step 6: Final answer
    x = 150,665.79

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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.