Finding the Fourth Proportional to 122,509.88, 168,538.75 and 117,261.08
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Solution
The fourth proportional to 122,509.88, 168,538.75 and 117,261.08 is: 161,317.89
Step by Step Solution
- Step 1: Write the proportion equation
122,509.88 : 168,538.75 = 117,261.08 : x - Step 2: Convert to fraction form
122,509.88/168,538.75 = 117,261.08/x - Step 3: Cross multiply
122,509.88x = 168,538.75 × 117,261.08 - Step 4: Simplify right side
122,509.88x = 19,763,034,711.00 - Step 5: Solve for x
x = 19,763,034,711.00/122,509.88 - Step 6: Final answer
x = 161,317.89
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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.