Home / 209,153.63-313,779.65-68,912.25

Finding the Fourth Proportional to 209,153.63, 313,779.65 and 68,912.25

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Solution

The fourth proportional to 209,153.63, 313,779.65 and 68,912.25 is: 103,384.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,153.63 : 313,779.65 = 68,912.25 : x
  2. Step 2: Convert to fraction form
    209,153.63/313,779.65 = 68,912.25/x
  3. Step 3: Cross multiply
    209,153.63x = 313,779.65 × 68,912.25
  4. Step 4: Simplify right side
    209,153.63x = 21,623,261,341.15
  5. Step 5: Solve for x
    x = 21,623,261,341.15/209,153.63
  6. Step 6: Final answer
    x = 103,384.59

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1.5x scale

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.