Home / 190,138.95-262,391.80-105,256.01

Finding the Fourth Proportional to 190,138.95, 262,391.80 and 105,256.01

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Solution

The fourth proportional to 190,138.95, 262,391.80 and 105,256.01 is: 145,253.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,138.95 : 262,391.80 = 105,256.01 : x
  2. Step 2: Convert to fraction form
    190,138.95/262,391.80 = 105,256.01/x
  3. Step 3: Cross multiply
    190,138.95x = 262,391.80 × 105,256.01
  4. Step 4: Simplify right side
    190,138.95x = 27,618,313,924.72
  5. Step 5: Solve for x
    x = 27,618,313,924.72/190,138.95
  6. Step 6: Final answer
    x = 145,253.32

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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.