Home / 209,627.76-289,291.42-114,139.64

Finding the Fourth Proportional to 209,627.76, 289,291.42 and 114,139.64

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Solution

The fourth proportional to 209,627.76, 289,291.42 and 114,139.64 is: 157,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,627.76 : 289,291.42 = 114,139.64 : x
  2. Step 2: Convert to fraction form
    209,627.76/289,291.42 = 114,139.64/x
  3. Step 3: Cross multiply
    209,627.76x = 289,291.42 × 114,139.64
  4. Step 4: Simplify right side
    209,627.76x = 33,019,618,533.89
  5. Step 5: Solve for x
    x = 33,019,618,533.89/209,627.76
  6. Step 6: Final answer
    x = 157,515.49

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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.