Home / 158,640.51-238,171.95-92,128.38

Finding the Fourth Proportional to 158,640.51, 238,171.95 and 92,128.38

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Solution

The fourth proportional to 158,640.51, 238,171.95 and 92,128.38 is: 138,315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,640.51 : 238,171.95 = 92,128.38 : x
  2. Step 2: Convert to fraction form
    158,640.51/238,171.95 = 92,128.38/x
  3. Step 3: Cross multiply
    158,640.51x = 238,171.95 × 92,128.38
  4. Step 4: Simplify right side
    158,640.51x = 21,942,395,914.94
  5. Step 5: Solve for x
    x = 21,942,395,914.94/158,640.51
  6. Step 6: Final answer
    x = 138,315.21

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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.