Home / 209,521.42-289,139.60-114,028.79

Finding the Fourth Proportional to 209,521.42, 289,139.60 and 114,028.79

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Solution

The fourth proportional to 209,521.42, 289,139.60 and 114,028.79 is: 157,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,521.42 : 289,139.60 = 114,028.79 : x
  2. Step 2: Convert to fraction form
    209,521.42/289,139.60 = 114,028.79/x
  3. Step 3: Cross multiply
    209,521.42x = 289,139.60 × 114,028.79
  4. Step 4: Simplify right side
    209,521.42x = 32,970,237,568.46
  5. Step 5: Solve for x
    x = 32,970,237,568.46/209,521.42
  6. Step 6: Final answer
    x = 157,359.75

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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.