Finding the Fourth Proportional to 122,698.86, 168,839.01 and 102,490.98
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Solution
The fourth proportional to 122,698.86, 168,839.01 and 102,490.98 is: 141,032.08
Step by Step Solution
- Step 1: Write the proportion equation
122,698.86 : 168,839.01 = 102,490.98 : x - Step 2: Convert to fraction form
122,698.86/168,839.01 = 102,490.98/x - Step 3: Cross multiply
122,698.86x = 168,839.01 × 102,490.98 - Step 4: Simplify right side
122,698.86x = 17,304,475,597.13 - Step 5: Solve for x
x = 17,304,475,597.13/122,698.86 - Step 6: Final answer
x = 141,032.08
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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.