Home / 131,322.20-197,007.60-42,578.60

Finding the Fourth Proportional to 131,322.20, 197,007.60 and 42,578.60

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Solution

The fourth proportional to 131,322.20, 197,007.60 and 42,578.60 is: 63,875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,322.20 : 197,007.60 = 42,578.60 : x
  2. Step 2: Convert to fraction form
    131,322.20/197,007.60 = 42,578.60/x
  3. Step 3: Cross multiply
    131,322.20x = 197,007.60 × 42,578.60
  4. Step 4: Simplify right side
    131,322.20x = 8,388,307,797.36
  5. Step 5: Solve for x
    x = 8,388,307,797.36/131,322.20
  6. Step 6: Final answer
    x = 63,875.78

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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.