Finding the Fourth Proportional to 135,397.06, 186,854.84 and 74,974.38
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Solution
The fourth proportional to 135,397.06, 186,854.84 and 74,974.38 is: 103,468.46
Step by Step Solution
- Step 1: Write the proportion equation
135,397.06 : 186,854.84 = 74,974.38 : x - Step 2: Convert to fraction form
135,397.06/186,854.84 = 74,974.38/x - Step 3: Cross multiply
135,397.06x = 186,854.84 × 74,974.38 - Step 4: Simplify right side
135,397.06x = 14,009,325,779.00 - Step 5: Solve for x
x = 14,009,325,779.00/135,397.06 - Step 6: Final answer
x = 103,468.46
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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.