Home / 136,411.28-188,257.02-82,698.56

Finding the Fourth Proportional to 136,411.28, 188,257.02 and 82,698.56

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Solution

The fourth proportional to 136,411.28, 188,257.02 and 82,698.56 is: 114,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,411.28 : 188,257.02 = 82,698.56 : x
  2. Step 2: Convert to fraction form
    136,411.28/188,257.02 = 82,698.56/x
  3. Step 3: Cross multiply
    136,411.28x = 188,257.02 × 82,698.56
  4. Step 4: Simplify right side
    136,411.28x = 15,568,584,463.89
  5. Step 5: Solve for x
    x = 15,568,584,463.89/136,411.28
  6. Step 6: Final answer
    x = 114,129.74

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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.