Home / 209,964.42-289,756.38-129,445.14

Finding the Fourth Proportional to 209,964.42, 289,756.38 and 129,445.14

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Solution

The fourth proportional to 209,964.42, 289,756.38 and 129,445.14 is: 178,637.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,964.42 : 289,756.38 = 129,445.14 : x
  2. Step 2: Convert to fraction form
    209,964.42/289,756.38 = 129,445.14/x
  3. Step 3: Cross multiply
    209,964.42x = 289,756.38 × 129,445.14
  4. Step 4: Simplify right side
    209,964.42x = 37,507,555,174.99
  5. Step 5: Solve for x
    x = 37,507,555,174.99/209,964.42
  6. Step 6: Final answer
    x = 178,637.67

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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.