Home / 128,004.32-192,172.80-98,443.10

Finding the Fourth Proportional to 128,004.32, 192,172.80 and 98,443.10

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Solution

The fourth proportional to 128,004.32, 192,172.80 and 98,443.10 is: 147,792.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,004.32 : 192,172.80 = 98,443.10 : x
  2. Step 2: Convert to fraction form
    128,004.32/192,172.80 = 98,443.10/x
  3. Step 3: Cross multiply
    128,004.32x = 192,172.80 × 98,443.10
  4. Step 4: Simplify right side
    128,004.32x = 18,918,086,167.68
  5. Step 5: Solve for x
    x = 18,918,086,167.68/128,004.32
  6. Step 6: Final answer
    x = 147,792.56

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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.