Home / 159,408.09-219,981.51-87,786.59

Finding the Fourth Proportional to 159,408.09, 219,981.51 and 87,786.59

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Solution

The fourth proportional to 159,408.09, 219,981.51 and 87,786.59 is: 121,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,408.09 : 219,981.51 = 87,786.59 : x
  2. Step 2: Convert to fraction form
    159,408.09/219,981.51 = 87,786.59/x
  3. Step 3: Cross multiply
    159,408.09x = 219,981.51 × 87,786.59
  4. Step 4: Simplify right side
    159,408.09x = 19,311,425,526.04
  5. Step 5: Solve for x
    x = 19,311,425,526.04/159,408.09
  6. Step 6: Final answer
    x = 121,144.58

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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.