Home / 212,105.40-318,090.48-69,924.18

Finding the Fourth Proportional to 212,105.40, 318,090.48 and 69,924.18

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Solution

The fourth proportional to 212,105.40, 318,090.48 and 69,924.18 is: 104,863.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,105.40 : 318,090.48 = 69,924.18 : x
  2. Step 2: Convert to fraction form
    212,105.40/318,090.48 = 69,924.18/x
  3. Step 3: Cross multiply
    212,105.40x = 318,090.48 × 69,924.18
  4. Step 4: Simplify right side
    212,105.40x = 22,242,214,389.35
  5. Step 5: Solve for x
    x = 22,242,214,389.35/212,105.40
  6. Step 6: Final answer
    x = 104,863.97

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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.