Home / 128,759.76-177,299.28-114,212.16

Finding the Fourth Proportional to 128,759.76, 177,299.28 and 114,212.16

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Solution

The fourth proportional to 128,759.76, 177,299.28 and 114,212.16 is: 157,267.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,759.76 : 177,299.28 = 114,212.16 : x
  2. Step 2: Convert to fraction form
    128,759.76/177,299.28 = 114,212.16/x
  3. Step 3: Cross multiply
    128,759.76x = 177,299.28 × 114,212.16
  4. Step 4: Simplify right side
    128,759.76x = 20,249,733,735.24
  5. Step 5: Solve for x
    x = 20,249,733,735.24/128,759.76
  6. Step 6: Final answer
    x = 157,267.56

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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.