Home / 135,972.19-187,644.96-74,717.89

Finding the Fourth Proportional to 135,972.19, 187,644.96 and 74,717.89

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Solution

The fourth proportional to 135,972.19, 187,644.96 and 74,717.89 is: 103,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,972.19 : 187,644.96 = 74,717.89 : x
  2. Step 2: Convert to fraction form
    135,972.19/187,644.96 = 74,717.89/x
  3. Step 3: Cross multiply
    135,972.19x = 187,644.96 × 74,717.89
  4. Step 4: Simplify right side
    135,972.19x = 14,020,435,480.33
  5. Step 5: Solve for x
    x = 14,020,435,480.33/135,972.19
  6. Step 6: Final answer
    x = 103,112.52

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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.