Home / 212,583.47-318,914.45-87,934.19

Finding the Fourth Proportional to 212,583.47, 318,914.45 and 87,934.19

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Solution

The fourth proportional to 212,583.47, 318,914.45 and 87,934.19 is: 131,917.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,583.47 : 318,914.45 = 87,934.19 : x
  2. Step 2: Convert to fraction form
    212,583.47/318,914.45 = 87,934.19/x
  3. Step 3: Cross multiply
    212,583.47x = 318,914.45 × 87,934.19
  4. Step 4: Simplify right side
    212,583.47x = 28,043,483,400.37
  5. Step 5: Solve for x
    x = 28,043,483,400.37/212,583.47
  6. Step 6: Final answer
    x = 131,917.52

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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.