Home / 190,002.21-262,201.10-105,119.88

Finding the Fourth Proportional to 190,002.21, 262,201.10 and 105,119.88

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Solution

The fourth proportional to 190,002.21, 262,201.10 and 105,119.88 is: 145,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,002.21 : 262,201.10 = 105,119.88 : x
  2. Step 2: Convert to fraction form
    190,002.21/262,201.10 = 105,119.88/x
  3. Step 3: Cross multiply
    190,002.21x = 262,201.10 × 105,119.88
  4. Step 4: Simplify right side
    190,002.21x = 27,562,547,250.31
  5. Step 5: Solve for x
    x = 27,562,547,250.31/190,002.21
  6. Step 6: Final answer
    x = 145,064.35

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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.