Home / 143,582.88-215,362-87,408.41

Finding the Fourth Proportional to 143,582.88, 215,362 and 87,408.41

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Solution

The fourth proportional to 143,582.88, 215,362 and 87,408.41 is: 131,105.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,582.88 : 215,362 = 87,408.41 : x
  2. Step 2: Convert to fraction form
    143,582.88/215,362 = 87,408.41/x
  3. Step 3: Cross multiply
    143,582.88x = 215,362 × 87,408.41
  4. Step 4: Simplify right side
    143,582.88x = 18,824,449,994.42
  5. Step 5: Solve for x
    x = 18,824,449,994.42/143,582.88
  6. Step 6: Final answer
    x = 131,105.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.