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Finding the Fourth Proportional to 125,580.80, 188,198.40 and 83,340.80

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Solution

The fourth proportional to 125,580.80, 188,198.40 and 83,340.80 is: 124,896.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,580.80 : 188,198.40 = 83,340.80 : x
  2. Step 2: Convert to fraction form
    125,580.80/188,198.40 = 83,340.80/x
  3. Step 3: Cross multiply
    125,580.80x = 188,198.40 × 83,340.80
  4. Step 4: Simplify right side
    125,580.80x = 15,684,605,214.72
  5. Step 5: Solve for x
    x = 15,684,605,214.72/125,580.80
  6. Step 6: Final answer
    x = 124,896.52

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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.