Home / 209,757.90-289,573.20-142,132.26

Finding the Fourth Proportional to 209,757.90, 289,573.20 and 142,132.26

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Solution

The fourth proportional to 209,757.90, 289,573.20 and 142,132.26 is: 196,215.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,757.90 : 289,573.20 = 142,132.26 : x
  2. Step 2: Convert to fraction form
    209,757.90/289,573.20 = 142,132.26/x
  3. Step 3: Cross multiply
    209,757.90x = 289,573.20 × 142,132.26
  4. Step 4: Simplify right side
    209,757.90x = 41,157,693,351.43
  5. Step 5: Solve for x
    x = 41,157,693,351.43/209,757.90
  6. Step 6: Final answer
    x = 196,215.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.