Home / 189,960.36-262,144.20-105,075.60

Finding the Fourth Proportional to 189,960.36, 262,144.20 and 105,075.60

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Solution

The fourth proportional to 189,960.36, 262,144.20 and 105,075.60 is: 145,003.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,960.36 : 262,144.20 = 105,075.60 : x
  2. Step 2: Convert to fraction form
    189,960.36/262,144.20 = 105,075.60/x
  3. Step 3: Cross multiply
    189,960.36x = 262,144.20 × 105,075.60
  4. Step 4: Simplify right side
    189,960.36x = 27,544,959,101.52
  5. Step 5: Solve for x
    x = 27,544,959,101.52/189,960.36
  6. Step 6: Final answer
    x = 145,003.72

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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.