Home / 205,869.60-309,322.80-131,025.60

Finding the Fourth Proportional to 205,869.60, 309,322.80 and 131,025.60

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Solution

The fourth proportional to 205,869.60, 309,322.80 and 131,025.60 is: 196,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,869.60 : 309,322.80 = 131,025.60 : x
  2. Step 2: Convert to fraction form
    205,869.60/309,322.80 = 131,025.60/x
  3. Step 3: Cross multiply
    205,869.60x = 309,322.80 × 131,025.60
  4. Step 4: Simplify right side
    205,869.60x = 40,529,205,463.68
  5. Step 5: Solve for x
    x = 40,529,205,463.68/205,869.60
  6. Step 6: Final answer
    x = 196,868.34

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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.