Home / 209,964.56-289,752-134,556.80

Finding the Fourth Proportional to 209,964.56, 289,752 and 134,556.80

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Solution

The fourth proportional to 209,964.56, 289,752 and 134,556.80 is: 185,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,964.56 : 289,752 = 134,556.80 : x
  2. Step 2: Convert to fraction form
    209,964.56/289,752 = 134,556.80/x
  3. Step 3: Cross multiply
    209,964.56x = 289,752 × 134,556.80
  4. Step 4: Simplify right side
    209,964.56x = 38,988,101,913.60
  5. Step 5: Solve for x
    x = 38,988,101,913.60/209,964.56
  6. Step 6: Final answer
    x = 185,688.97

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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.