Home / 98,972.20-148,458.30-28,858.60

Finding the Fourth Proportional to 98,972.20, 148,458.30 and 28,858.60

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Solution

The fourth proportional to 98,972.20, 148,458.30 and 28,858.60 is: 43,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,972.20 : 148,458.30 = 28,858.60 : x
  2. Step 2: Convert to fraction form
    98,972.20/148,458.30 = 28,858.60/x
  3. Step 3: Cross multiply
    98,972.20x = 148,458.30 × 28,858.60
  4. Step 4: Simplify right side
    98,972.20x = 4,284,298,696.38
  5. Step 5: Solve for x
    x = 4,284,298,696.38/98,972.20
  6. Step 6: Final answer
    x = 43,287.90

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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.