Home / 128,941.36-193,348.64-75,736.92

Finding the Fourth Proportional to 128,941.36, 193,348.64 and 75,736.92

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Solution

The fourth proportional to 128,941.36, 193,348.64 and 75,736.92 is: 113,568.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,941.36 : 193,348.64 = 75,736.92 : x
  2. Step 2: Convert to fraction form
    128,941.36/193,348.64 = 75,736.92/x
  3. Step 3: Cross multiply
    128,941.36x = 193,348.64 × 75,736.92
  4. Step 4: Simplify right side
    128,941.36x = 14,643,630,479.79
  5. Step 5: Solve for x
    x = 14,643,630,479.79/128,941.36
  6. Step 6: Final answer
    x = 113,568.14

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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.