Finding the Fourth Proportional to 153,558.51, 211,907.86 and 85,573.99
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Solution
The fourth proportional to 153,558.51, 211,907.86 and 85,573.99 is: 118,090.50
Step by Step Solution
- Step 1: Write the proportion equation
153,558.51 : 211,907.86 = 85,573.99 : x - Step 2: Convert to fraction form
153,558.51/211,907.86 = 85,573.99/x - Step 3: Cross multiply
153,558.51x = 211,907.86 × 85,573.99 - Step 4: Simplify right side
153,558.51x = 18,133,801,092.56 - Step 5: Solve for x
x = 18,133,801,092.56/153,558.51 - Step 6: Final answer
x = 118,090.50
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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.