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Finding the Fourth Proportional to 107,388.88, 161,083.32 and 40,813.36

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Solution

The fourth proportional to 107,388.88, 161,083.32 and 40,813.36 is: 61,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,388.88 : 161,083.32 = 40,813.36 : x
  2. Step 2: Convert to fraction form
    107,388.88/161,083.32 = 40,813.36/x
  3. Step 3: Cross multiply
    107,388.88x = 161,083.32 × 40,813.36
  4. Step 4: Simplify right side
    107,388.88x = 6,574,351,529.16
  5. Step 5: Solve for x
    x = 6,574,351,529.16/107,388.88
  6. Step 6: Final answer
    x = 61,220.04

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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.