Home / 136,538.92-188,504.58-121,389.76

Finding the Fourth Proportional to 136,538.92, 188,504.58 and 121,389.76

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Solution

The fourth proportional to 136,538.92, 188,504.58 and 121,389.76 is: 167,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,538.92 : 188,504.58 = 121,389.76 : x
  2. Step 2: Convert to fraction form
    136,538.92/188,504.58 = 121,389.76/x
  3. Step 3: Cross multiply
    136,538.92x = 188,504.58 × 121,389.76
  4. Step 4: Simplify right side
    136,538.92x = 22,882,525,725.10
  5. Step 5: Solve for x
    x = 22,882,525,725.10/136,538.92
  6. Step 6: Final answer
    x = 167,589.77

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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.