Home / 123,785.49-185,648.37-57,161.58

Finding the Fourth Proportional to 123,785.49, 185,648.37 and 57,161.58

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Solution

The fourth proportional to 123,785.49, 185,648.37 and 57,161.58 is: 85,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,785.49 : 185,648.37 = 57,161.58 : x
  2. Step 2: Convert to fraction form
    123,785.49/185,648.37 = 57,161.58/x
  3. Step 3: Cross multiply
    123,785.49x = 185,648.37 × 57,161.58
  4. Step 4: Simplify right side
    123,785.49x = 10,611,954,153.62
  5. Step 5: Solve for x
    x = 10,611,954,153.62/123,785.49
  6. Step 6: Final answer
    x = 85,728.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.