Home / 191,171.28-263,820.69-105,124.85

Finding the Fourth Proportional to 191,171.28, 263,820.69 and 105,124.85

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Solution

The fourth proportional to 191,171.28, 263,820.69 and 105,124.85 is: 145,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,171.28 : 263,820.69 = 105,124.85 : x
  2. Step 2: Convert to fraction form
    191,171.28/263,820.69 = 105,124.85/x
  3. Step 3: Cross multiply
    191,171.28x = 263,820.69 × 105,124.85
  4. Step 4: Simplify right side
    191,171.28x = 27,734,110,463.15
  5. Step 5: Solve for x
    x = 27,734,110,463.15/191,171.28
  6. Step 6: Final answer
    x = 145,074.67

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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.