Home / 128,179.36-192,142.67-45,015.04

Finding the Fourth Proportional to 128,179.36, 192,142.67 and 45,015.04

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Solution

The fourth proportional to 128,179.36, 192,142.67 and 45,015.04 is: 67,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,179.36 : 192,142.67 = 45,015.04 : x
  2. Step 2: Convert to fraction form
    128,179.36/192,142.67 = 45,015.04/x
  3. Step 3: Cross multiply
    128,179.36x = 192,142.67 × 45,015.04
  4. Step 4: Simplify right side
    128,179.36x = 8,649,309,015.04
  5. Step 5: Solve for x
    x = 8,649,309,015.04/128,179.36
  6. Step 6: Final answer
    x = 67,478.18

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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.