Home / 189,776.81-261,911.12-109,207.73

Finding the Fourth Proportional to 189,776.81, 261,911.12 and 109,207.73

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Solution

The fourth proportional to 189,776.81, 261,911.12 and 109,207.73 is: 150,717.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,776.81 : 261,911.12 = 109,207.73 : x
  2. Step 2: Convert to fraction form
    189,776.81/261,911.12 = 109,207.73/x
  3. Step 3: Cross multiply
    189,776.81x = 261,911.12 × 109,207.73
  4. Step 4: Simplify right side
    189,776.81x = 28,602,718,876.96
  5. Step 5: Solve for x
    x = 28,602,718,876.96/189,776.81
  6. Step 6: Final answer
    x = 150,717.67

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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.