Home / 209,166.90-288,544.06-136,612.30

Finding the Fourth Proportional to 209,166.90, 288,544.06 and 136,612.30

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Solution

The fourth proportional to 209,166.90, 288,544.06 and 136,612.30 is: 188,455.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,166.90 : 288,544.06 = 136,612.30 : x
  2. Step 2: Convert to fraction form
    209,166.90/288,544.06 = 136,612.30/x
  3. Step 3: Cross multiply
    209,166.90x = 288,544.06 × 136,612.30
  4. Step 4: Simplify right side
    209,166.90x = 39,418,668,067.77
  5. Step 5: Solve for x
    x = 39,418,668,067.77/209,166.90
  6. Step 6: Final answer
    x = 188,455.57

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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.