Home / 209,547.37-289,181.61-129,021.34

Finding the Fourth Proportional to 209,547.37, 289,181.61 and 129,021.34

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Solution

The fourth proportional to 209,547.37, 289,181.61 and 129,021.34 is: 178,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,547.37 : 289,181.61 = 129,021.34 : x
  2. Step 2: Convert to fraction form
    209,547.37/289,181.61 = 129,021.34/x
  3. Step 3: Cross multiply
    209,547.37x = 289,181.61 × 129,021.34
  4. Step 4: Simplify right side
    209,547.37x = 37,310,598,825.56
  5. Step 5: Solve for x
    x = 37,310,598,825.56/209,547.37
  6. Step 6: Final answer
    x = 178,053.29

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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.