Finding the Fourth Proportional to 155,890.19, 214,984.99 and 102,155.69
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Solution
The fourth proportional to 155,890.19, 214,984.99 and 102,155.69 is: 140,880.83
Step by Step Solution
- Step 1: Write the proportion equation
155,890.19 : 214,984.99 = 102,155.69 : x - Step 2: Convert to fraction form
155,890.19/214,984.99 = 102,155.69/x - Step 3: Cross multiply
155,890.19x = 214,984.99 × 102,155.69 - Step 4: Simplify right side
155,890.19x = 21,961,939,993.09 - Step 5: Solve for x
x = 21,961,939,993.09/155,890.19 - Step 6: Final answer
x = 140,880.83
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.