Home / 214,904.90-296,556.68-128,820.81

Finding the Fourth Proportional to 214,904.90, 296,556.68 and 128,820.81

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Solution

The fourth proportional to 214,904.90, 296,556.68 and 128,820.81 is: 177,765.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,904.90 : 296,556.68 = 128,820.81 : x
  2. Step 2: Convert to fraction form
    214,904.90/296,556.68 = 128,820.81/x
  3. Step 3: Cross multiply
    214,904.90x = 296,556.68 × 128,820.81
  4. Step 4: Simplify right side
    214,904.90x = 38,202,672,050.56
  5. Step 5: Solve for x
    x = 38,202,672,050.56/214,904.90
  6. Step 6: Final answer
    x = 177,765.47

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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.