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Finding the Fourth Proportional to 252,143.88, 347,949.72 and 137,420.16

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Solution

The fourth proportional to 252,143.88, 347,949.72 and 137,420.16 is: 189,635.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,143.88 : 347,949.72 = 137,420.16 : x
  2. Step 2: Convert to fraction form
    252,143.88/347,949.72 = 137,420.16/x
  3. Step 3: Cross multiply
    252,143.88x = 347,949.72 × 137,420.16
  4. Step 4: Simplify right side
    252,143.88x = 47,815,306,194.36
  5. Step 5: Solve for x
    x = 47,815,306,194.36/252,143.88
  6. Step 6: Final answer
    x = 189,635.01

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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.