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Finding the Fourth Proportional to 137,625.54, 206,388.72 and 47,643.81

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Solution

The fourth proportional to 137,625.54, 206,388.72 and 47,643.81 is: 71,448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,625.54 : 206,388.72 = 47,643.81 : x
  2. Step 2: Convert to fraction form
    137,625.54/206,388.72 = 47,643.81/x
  3. Step 3: Cross multiply
    137,625.54x = 206,388.72 × 47,643.81
  4. Step 4: Simplify right side
    137,625.54x = 9,833,144,961.82
  5. Step 5: Solve for x
    x = 9,833,144,961.82/137,625.54
  6. Step 6: Final answer
    x = 71,448.55

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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.