Home / 209,531.97-289,215.15-136,945.44

Finding the Fourth Proportional to 209,531.97, 289,215.15 and 136,945.44

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Solution

The fourth proportional to 209,531.97, 289,215.15 and 136,945.44 is: 189,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,531.97 : 289,215.15 = 136,945.44 : x
  2. Step 2: Convert to fraction form
    209,531.97/289,215.15 = 136,945.44/x
  3. Step 3: Cross multiply
    209,531.97x = 289,215.15 × 136,945.44
  4. Step 4: Simplify right side
    209,531.97x = 39,606,695,971.42
  5. Step 5: Solve for x
    x = 39,606,695,971.42/209,531.97
  6. Step 6: Final answer
    x = 189,024.60

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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.