Home / 492,112.26-738,208.89-137,129.76

Finding the Fourth Proportional to 492,112.26, 738,208.89 and 137,129.76

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Solution

The fourth proportional to 492,112.26, 738,208.89 and 137,129.76 is: 205,705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,112.26 : 738,208.89 = 137,129.76 : x
  2. Step 2: Convert to fraction form
    492,112.26/738,208.89 = 137,129.76/x
  3. Step 3: Cross multiply
    492,112.26x = 738,208.89 × 137,129.76
  4. Step 4: Simplify right side
    492,112.26x = 101,230,407,915.57
  5. Step 5: Solve for x
    x = 101,230,407,915.57/492,112.26
  6. Step 6: Final answer
    x = 205,705.93

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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.