Home / 209,474.15-289,036.06-136,857.71

Finding the Fourth Proportional to 209,474.15, 289,036.06 and 136,857.71

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Solution

The fourth proportional to 209,474.15, 289,036.06 and 136,857.71 is: 188,838.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,474.15 : 289,036.06 = 136,857.71 : x
  2. Step 2: Convert to fraction form
    209,474.15/289,036.06 = 136,857.71/x
  3. Step 3: Cross multiply
    209,474.15x = 289,036.06 × 136,857.71
  4. Step 4: Simplify right side
    209,474.15x = 39,556,813,659.47
  5. Step 5: Solve for x
    x = 39,556,813,659.47/209,474.15
  6. Step 6: Final answer
    x = 188,838.64

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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.