Home / 140,400.37-193,838.36-91,388.69

Finding the Fourth Proportional to 140,400.37, 193,838.36 and 91,388.69

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Solution

The fourth proportional to 140,400.37, 193,838.36 and 91,388.69 is: 126,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,400.37 : 193,838.36 = 91,388.69 : x
  2. Step 2: Convert to fraction form
    140,400.37/193,838.36 = 91,388.69/x
  3. Step 3: Cross multiply
    140,400.37x = 193,838.36 × 91,388.69
  4. Step 4: Simplify right side
    140,400.37x = 17,714,632,366.01
  5. Step 5: Solve for x
    x = 17,714,632,366.01/140,400.37
  6. Step 6: Final answer
    x = 126,172.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.