Finding the Fourth Proportional to 153,178.05, 211,151.43 and 107,732.19
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Solution
The fourth proportional to 153,178.05, 211,151.43 and 107,732.19 is: 148,505.65
Step by Step Solution
- Step 1: Write the proportion equation
153,178.05 : 211,151.43 = 107,732.19 : x - Step 2: Convert to fraction form
153,178.05/211,151.43 = 107,732.19/x - Step 3: Cross multiply
153,178.05x = 211,151.43 × 107,732.19 - Step 4: Simplify right side
153,178.05x = 22,747,805,975.53 - Step 5: Solve for x
x = 22,747,805,975.53/153,178.05 - Step 6: Final answer
x = 148,505.65
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1.5x scale
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.