Home / 131,389.54-181,299.38-74,019.26

Finding the Fourth Proportional to 131,389.54, 181,299.38 and 74,019.26

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Solution

The fourth proportional to 131,389.54, 181,299.38 and 74,019.26 is: 102,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,389.54 : 181,299.38 = 74,019.26 : x
  2. Step 2: Convert to fraction form
    131,389.54/181,299.38 = 74,019.26/x
  3. Step 3: Cross multiply
    131,389.54x = 181,299.38 × 74,019.26
  4. Step 4: Simplify right side
    131,389.54x = 13,419,645,946.06
  5. Step 5: Solve for x
    x = 13,419,645,946.06/131,389.54
  6. Step 6: Final answer
    x = 102,136.33

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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.