Home / 209,111.11-313,490.33-90,693.26

Finding the Fourth Proportional to 209,111.11, 313,490.33 and 90,693.26

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Solution

The fourth proportional to 209,111.11, 313,490.33 and 90,693.26 is: 135,963.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,111.11 : 313,490.33 = 90,693.26 : x
  2. Step 2: Convert to fraction form
    209,111.11/313,490.33 = 90,693.26/x
  3. Step 3: Cross multiply
    209,111.11x = 313,490.33 × 90,693.26
  4. Step 4: Simplify right side
    209,111.11x = 28,431,457,985.26
  5. Step 5: Solve for x
    x = 28,431,457,985.26/209,111.11
  6. Step 6: Final answer
    x = 135,963.41

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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.