Home / 209,524.88-289,150.02-128,998.24

Finding the Fourth Proportional to 209,524.88, 289,150.02 and 128,998.24

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Solution

The fourth proportional to 209,524.88, 289,150.02 and 128,998.24 is: 178,021.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,524.88 : 289,150.02 = 128,998.24 : x
  2. Step 2: Convert to fraction form
    209,524.88/289,150.02 = 128,998.24/x
  3. Step 3: Cross multiply
    209,524.88x = 289,150.02 × 128,998.24
  4. Step 4: Simplify right side
    209,524.88x = 37,299,842,953.09
  5. Step 5: Solve for x
    x = 37,299,842,953.09/209,524.88
  6. Step 6: Final answer
    x = 178,021.07

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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.