Home / 136,411.53-188,218.21-82,709.74

Finding the Fourth Proportional to 136,411.53, 188,218.21 and 82,709.74

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Solution

The fourth proportional to 136,411.53, 188,218.21 and 82,709.74 is: 114,121.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,411.53 : 188,218.21 = 82,709.74 : x
  2. Step 2: Convert to fraction form
    136,411.53/188,218.21 = 82,709.74/x
  3. Step 3: Cross multiply
    136,411.53x = 188,218.21 × 82,709.74
  4. Step 4: Simplify right side
    136,411.53x = 15,567,479,212.37
  5. Step 5: Solve for x
    x = 15,567,479,212.37/136,411.53
  6. Step 6: Final answer
    x = 114,121.44

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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.