Home / 212,582.97-318,913.70-87,933.69

Finding the Fourth Proportional to 212,582.97, 318,913.70 and 87,933.69

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Solution

The fourth proportional to 212,582.97, 318,913.70 and 87,933.69 is: 131,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,582.97 : 318,913.70 = 87,933.69 : x
  2. Step 2: Convert to fraction form
    212,582.97/318,913.70 = 87,933.69/x
  3. Step 3: Cross multiply
    212,582.97x = 318,913.70 × 87,933.69
  4. Step 4: Simplify right side
    212,582.97x = 28,043,257,992.88
  5. Step 5: Solve for x
    x = 28,043,257,992.88/212,582.97
  6. Step 6: Final answer
    x = 131,916.77

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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.