Home / 209,767.14-289,499.56-128,090.89

Finding the Fourth Proportional to 209,767.14, 289,499.56 and 128,090.89

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Solution

The fourth proportional to 209,767.14, 289,499.56 and 128,090.89 is: 176,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,767.14 : 289,499.56 = 128,090.89 : x
  2. Step 2: Convert to fraction form
    209,767.14/289,499.56 = 128,090.89/x
  3. Step 3: Cross multiply
    209,767.14x = 289,499.56 × 128,090.89
  4. Step 4: Simplify right side
    209,767.14x = 37,082,257,057.17
  5. Step 5: Solve for x
    x = 37,082,257,057.17/209,767.14
  6. Step 6: Final answer
    x = 176,778.20

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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.