Finding the Fourth Proportional to 135,129.61, 186,477.63 and 74,701.81
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Solution
The fourth proportional to 135,129.61, 186,477.63 and 74,701.81 is: 103,087.82
Step by Step Solution
- Step 1: Write the proportion equation
135,129.61 : 186,477.63 = 74,701.81 : x - Step 2: Convert to fraction form
135,129.61/186,477.63 = 74,701.81/x - Step 3: Cross multiply
135,129.61x = 186,477.63 × 74,701.81 - Step 4: Simplify right side
135,129.61x = 13,930,216,485.51 - Step 5: Solve for x
x = 13,930,216,485.51/135,129.61 - Step 6: Final answer
x = 103,087.82
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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.