Finding the Fourth Proportional to 142,849.70, 197,119.32 and 79,182.08
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Solution
The fourth proportional to 142,849.70, 197,119.32 and 79,182.08 is: 109,263.91
Step by Step Solution
- Step 1: Write the proportion equation
142,849.70 : 197,119.32 = 79,182.08 : x - Step 2: Convert to fraction form
142,849.70/197,119.32 = 79,182.08/x - Step 3: Cross multiply
142,849.70x = 197,119.32 × 79,182.08 - Step 4: Simplify right side
142,849.70x = 15,608,316,780.19 - Step 5: Solve for x
x = 15,608,316,780.19/142,849.70 - Step 6: Final answer
x = 109,263.91
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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.