Home / 209,911.10-314,915.85-69,669.72

Finding the Fourth Proportional to 209,911.10, 314,915.85 and 69,669.72

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Solution

The fourth proportional to 209,911.10, 314,915.85 and 69,669.72 is: 104,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,911.10 : 314,915.85 = 69,669.72 : x
  2. Step 2: Convert to fraction form
    209,911.10/314,915.85 = 69,669.72/x
  3. Step 3: Cross multiply
    209,911.10x = 314,915.85 × 69,669.72
  4. Step 4: Simplify right side
    209,911.10x = 21,940,099,093.06
  5. Step 5: Solve for x
    x = 21,940,099,093.06/209,911.10
  6. Step 6: Final answer
    x = 104,520.91

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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.