Finding the Fourth Proportional to 112,425.67, 155,148.11 and 61,437.79
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Solution
The fourth proportional to 112,425.67, 155,148.11 and 61,437.79 is: 84,784.52
Step by Step Solution
- Step 1: Write the proportion equation
112,425.67 : 155,148.11 = 61,437.79 : x - Step 2: Convert to fraction form
112,425.67/155,148.11 = 61,437.79/x - Step 3: Cross multiply
112,425.67x = 155,148.11 × 61,437.79 - Step 4: Simplify right side
112,425.67x = 9,531,957,001.08 - Step 5: Solve for x
x = 9,531,957,001.08/112,425.67 - Step 6: Final answer
x = 84,784.52
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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.