Home / 128,943.36-193,416.32-38,986.80

Finding the Fourth Proportional to 128,943.36, 193,416.32 and 38,986.80

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Solution

The fourth proportional to 128,943.36, 193,416.32 and 38,986.80 is: 58,480.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,943.36 : 193,416.32 = 38,986.80 : x
  2. Step 2: Convert to fraction form
    128,943.36/193,416.32 = 38,986.80/x
  3. Step 3: Cross multiply
    128,943.36x = 193,416.32 × 38,986.80
  4. Step 4: Simplify right side
    128,943.36x = 7,540,683,384.58
  5. Step 5: Solve for x
    x = 7,540,683,384.58/128,943.36
  6. Step 6: Final answer
    x = 58,480.59

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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.