Finding the Fourth Proportional to 138,615.18, 191,288.79 and 74,952.82
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Solution
The fourth proportional to 138,615.18, 191,288.79 and 74,952.82 is: 103,434.81
Step by Step Solution
- Step 1: Write the proportion equation
138,615.18 : 191,288.79 = 74,952.82 : x - Step 2: Convert to fraction form
138,615.18/191,288.79 = 74,952.82/x - Step 3: Cross multiply
138,615.18x = 191,288.79 × 74,952.82 - Step 4: Simplify right side
138,615.18x = 14,337,634,244.89 - Step 5: Solve for x
x = 14,337,634,244.89/138,615.18 - Step 6: Final answer
x = 103,434.81
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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.