Home / 212,018.41-318,074.50-69,857.94

Finding the Fourth Proportional to 212,018.41, 318,074.50 and 69,857.94

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Solution

The fourth proportional to 212,018.41, 318,074.50 and 69,857.94 is: 104,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,018.41 : 318,074.50 = 69,857.94 : x
  2. Step 2: Convert to fraction form
    212,018.41/318,074.50 = 69,857.94/x
  3. Step 3: Cross multiply
    212,018.41x = 318,074.50 × 69,857.94
  4. Step 4: Simplify right side
    212,018.41x = 22,220,030,223.68
  5. Step 5: Solve for x
    x = 22,220,030,223.68/212,018.41
  6. Step 6: Final answer
    x = 104,802.36

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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.