Home / 127,212.48-190,813.86-52,311.78

Finding the Fourth Proportional to 127,212.48, 190,813.86 and 52,311.78

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Solution

The fourth proportional to 127,212.48, 190,813.86 and 52,311.78 is: 78,465.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,212.48 : 190,813.86 = 52,311.78 : x
  2. Step 2: Convert to fraction form
    127,212.48/190,813.86 = 52,311.78/x
  3. Step 3: Cross multiply
    127,212.48x = 190,813.86 × 52,311.78
  4. Step 4: Simplify right side
    127,212.48x = 9,981,812,665.27
  5. Step 5: Solve for x
    x = 9,981,812,665.27/127,212.48
  6. Step 6: Final answer
    x = 78,465.67

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1.5x scale

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.