Home / 198,458.87-273,875.16-107,815.55

Finding the Fourth Proportional to 198,458.87, 273,875.16 and 107,815.55

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Solution

The fourth proportional to 198,458.87, 273,875.16 and 107,815.55 is: 148,786.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,458.87 : 273,875.16 = 107,815.55 : x
  2. Step 2: Convert to fraction form
    198,458.87/273,875.16 = 107,815.55/x
  3. Step 3: Cross multiply
    198,458.87x = 273,875.16 × 107,815.55
  4. Step 4: Simplify right side
    198,458.87x = 29,527,999,637.36
  5. Step 5: Solve for x
    x = 29,527,999,637.36/198,458.87
  6. Step 6: Final answer
    x = 148,786.50

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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.