Home / 121,534.70-182,302.05-111,911.90

Finding the Fourth Proportional to 121,534.70, 182,302.05 and 111,911.90

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Solution

The fourth proportional to 121,534.70, 182,302.05 and 111,911.90 is: 167,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,534.70 : 182,302.05 = 111,911.90 : x
  2. Step 2: Convert to fraction form
    121,534.70/182,302.05 = 111,911.90/x
  3. Step 3: Cross multiply
    121,534.70x = 182,302.05 × 111,911.90
  4. Step 4: Simplify right side
    121,534.70x = 20,401,768,789.40
  5. Step 5: Solve for x
    x = 20,401,768,789.40/121,534.70
  6. Step 6: Final answer
    x = 167,867.85

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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.