Home / 112,843.07-155,721.21-61,855.91

Finding the Fourth Proportional to 112,843.07, 155,721.21 and 61,855.91

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Solution

The fourth proportional to 112,843.07, 155,721.21 and 61,855.91 is: 85,359.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,843.07 : 155,721.21 = 61,855.91 : x
  2. Step 2: Convert to fraction form
    112,843.07/155,721.21 = 61,855.91/x
  3. Step 3: Cross multiply
    112,843.07x = 155,721.21 × 61,855.91
  4. Step 4: Simplify right side
    112,843.07x = 9,632,276,372.25
  5. Step 5: Solve for x
    x = 9,632,276,372.25/112,843.07
  6. Step 6: Final answer
    x = 85,359.93

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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.