Home / 212,111.16-318,099.09-69,929.94

Finding the Fourth Proportional to 212,111.16, 318,099.09 and 69,929.94

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Solution

The fourth proportional to 212,111.16, 318,099.09 and 69,929.94 is: 104,872.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,111.16 : 318,099.09 = 69,929.94 : x
  2. Step 2: Convert to fraction form
    212,111.16/318,099.09 = 69,929.94/x
  3. Step 3: Cross multiply
    212,111.16x = 318,099.09 × 69,929.94
  4. Step 4: Simplify right side
    212,111.16x = 22,244,650,277.75
  5. Step 5: Solve for x
    x = 22,244,650,277.75/212,111.16
  6. Step 6: Final answer
    x = 104,872.61

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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.