Finding the Fourth Proportional to 135,356.54, 186,789.76 and 74,925.89
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Solution
The fourth proportional to 135,356.54, 186,789.76 and 74,925.89 is: 103,396.49
Step by Step Solution
- Step 1: Write the proportion equation
135,356.54 : 186,789.76 = 74,925.89 : x - Step 2: Convert to fraction form
135,356.54/186,789.76 = 74,925.89/x - Step 3: Cross multiply
135,356.54x = 186,789.76 × 74,925.89 - Step 4: Simplify right side
135,356.54x = 13,995,390,062.24 - Step 5: Solve for x
x = 13,995,390,062.24/135,356.54 - Step 6: Final answer
x = 103,396.49
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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.