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Finding the Fourth Proportional to 125,379.12, 188,133.34 and 83,288.28

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Solution

The fourth proportional to 125,379.12, 188,133.34 and 83,288.28 is: 124,975.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,379.12 : 188,133.34 = 83,288.28 : x
  2. Step 2: Convert to fraction form
    125,379.12/188,133.34 = 83,288.28/x
  3. Step 3: Cross multiply
    125,379.12x = 188,133.34 × 83,288.28
  4. Step 4: Simplify right side
    125,379.12x = 15,669,302,299.26
  5. Step 5: Solve for x
    x = 15,669,302,299.26/125,379.12
  6. Step 6: Final answer
    x = 124,975.37

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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.