Home / 128,178.56-192,100.62-92,759.18

Finding the Fourth Proportional to 128,178.56, 192,100.62 and 92,759.18

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Solution

The fourth proportional to 128,178.56, 192,100.62 and 92,759.18 is: 139,017.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,178.56 : 192,100.62 = 92,759.18 : x
  2. Step 2: Convert to fraction form
    128,178.56/192,100.62 = 92,759.18/x
  3. Step 3: Cross multiply
    128,178.56x = 192,100.62 × 92,759.18
  4. Step 4: Simplify right side
    128,178.56x = 17,819,095,988.69
  5. Step 5: Solve for x
    x = 17,819,095,988.69/128,178.56
  6. Step 6: Final answer
    x = 139,017.76

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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.