Finding the Fourth Proportional to 130,925.74, 180,678.79 and 74,338.38
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Solution
The fourth proportional to 130,925.74, 180,678.79 and 74,338.38 is: 102,587.68
Step by Step Solution
- Step 1: Write the proportion equation
130,925.74 : 180,678.79 = 74,338.38 : x - Step 2: Convert to fraction form
130,925.74/180,678.79 = 74,338.38/x - Step 3: Cross multiply
130,925.74x = 180,678.79 × 74,338.38 - Step 4: Simplify right side
130,925.74x = 13,431,368,548.96 - Step 5: Solve for x
x = 13,431,368,548.96/130,925.74 - Step 6: Final answer
x = 102,587.68
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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.