Home / 138,971.23-191,706.19-84,540.04

Finding the Fourth Proportional to 138,971.23, 191,706.19 and 84,540.04

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Solution

The fourth proportional to 138,971.23, 191,706.19 and 84,540.04 is: 116,620.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,971.23 : 191,706.19 = 84,540.04 : x
  2. Step 2: Convert to fraction form
    138,971.23/191,706.19 = 84,540.04/x
  3. Step 3: Cross multiply
    138,971.23x = 191,706.19 × 84,540.04
  4. Step 4: Simplify right side
    138,971.23x = 16,206,848,280.23
  5. Step 5: Solve for x
    x = 16,206,848,280.23/138,971.23
  6. Step 6: Final answer
    x = 116,620.17

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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.