Finding the Fourth Proportional to 138,658.95, 191,349.36 and 74,996.75
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Solution
The fourth proportional to 138,658.95, 191,349.36 and 74,996.75 is: 103,495.52
Step by Step Solution
- Step 1: Write the proportion equation
138,658.95 : 191,349.36 = 74,996.75 : x - Step 2: Convert to fraction form
138,658.95/191,349.36 = 74,996.75/x - Step 3: Cross multiply
138,658.95x = 191,349.36 × 74,996.75 - Step 4: Simplify right side
138,658.95x = 14,350,579,996.63 - Step 5: Solve for x
x = 14,350,579,996.63/138,658.95 - Step 6: Final answer
x = 103,495.52
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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.