Home / 135,940.23-187,665.69-84,981.30

Finding the Fourth Proportional to 135,940.23, 187,665.69 and 84,981.30

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Solution

The fourth proportional to 135,940.23, 187,665.69 and 84,981.30 is: 117,316.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,940.23 : 187,665.69 = 84,981.30 : x
  2. Step 2: Convert to fraction form
    135,940.23/187,665.69 = 84,981.30/x
  3. Step 3: Cross multiply
    135,940.23x = 187,665.69 × 84,981.30
  4. Step 4: Simplify right side
    135,940.23x = 15,948,074,301.60
  5. Step 5: Solve for x
    x = 15,948,074,301.60/135,940.23
  6. Step 6: Final answer
    x = 117,316.81

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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.