Finding the Fourth Proportional to 142,910.37, 197,226.27 and 79,254.09
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Solution
The fourth proportional to 142,910.37, 197,226.27 and 79,254.09 is: 109,376.17
Step by Step Solution
- Step 1: Write the proportion equation
142,910.37 : 197,226.27 = 79,254.09 : x - Step 2: Convert to fraction form
142,910.37/197,226.27 = 79,254.09/x - Step 3: Cross multiply
142,910.37x = 197,226.27 × 79,254.09 - Step 4: Simplify right side
142,910.37x = 15,630,988,552.94 - Step 5: Solve for x
x = 15,630,988,552.94/142,910.37 - Step 6: Final answer
x = 109,376.17
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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.