Home / 112,874.21-155,768.16-61,891.59

Finding the Fourth Proportional to 112,874.21, 155,768.16 and 61,891.59

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Solution

The fourth proportional to 112,874.21, 155,768.16 and 61,891.59 is: 85,411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,874.21 : 155,768.16 = 61,891.59 : x
  2. Step 2: Convert to fraction form
    112,874.21/155,768.16 = 61,891.59/x
  3. Step 3: Cross multiply
    112,874.21x = 155,768.16 × 61,891.59
  4. Step 4: Simplify right side
    112,874.21x = 9,640,739,910.00
  5. Step 5: Solve for x
    x = 9,640,739,910.00/112,874.21
  6. Step 6: Final answer
    x = 85,411.36

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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.