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Finding the Fourth Proportional to 135,703.51, 203,489.32 and 40,916.13

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Solution

The fourth proportional to 135,703.51, 203,489.32 and 40,916.13 is: 61,354.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,703.51 : 203,489.32 = 40,916.13 : x
  2. Step 2: Convert to fraction form
    135,703.51/203,489.32 = 40,916.13/x
  3. Step 3: Cross multiply
    135,703.51x = 203,489.32 × 40,916.13
  4. Step 4: Simplify right side
    135,703.51x = 8,325,995,470.73
  5. Step 5: Solve for x
    x = 8,325,995,470.73/135,703.51
  6. Step 6: Final answer
    x = 61,354.31

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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.