Home / 189,977.85-285,078.60-70,119.18

Finding the Fourth Proportional to 189,977.85, 285,078.60 and 70,119.18

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Solution

The fourth proportional to 189,977.85, 285,078.60 and 70,119.18 is: 105,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,977.85 : 285,078.60 = 70,119.18 : x
  2. Step 2: Convert to fraction form
    189,977.85/285,078.60 = 70,119.18/x
  3. Step 3: Cross multiply
    189,977.85x = 285,078.60 × 70,119.18
  4. Step 4: Simplify right side
    189,977.85x = 19,989,477,667.55
  5. Step 5: Solve for x
    x = 19,989,477,667.55/189,977.85
  6. Step 6: Final answer
    x = 105,220.04

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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.