Home / 209,621.70-289,279.05-114,128.10

Finding the Fourth Proportional to 209,621.70, 289,279.05 and 114,128.10

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Solution

The fourth proportional to 209,621.70, 289,279.05 and 114,128.10 is: 157,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,621.70 : 289,279.05 = 114,128.10 : x
  2. Step 2: Convert to fraction form
    209,621.70/289,279.05 = 114,128.10/x
  3. Step 3: Cross multiply
    209,621.70x = 289,279.05 × 114,128.10
  4. Step 4: Simplify right side
    209,621.70x = 33,014,868,346.31
  5. Step 5: Solve for x
    x = 33,014,868,346.31/209,621.70
  6. Step 6: Final answer
    x = 157,497.38

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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.