Finding the Fourth Proportional to 135,246.18, 186,638.13 and 74,812.08
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Solution
The fourth proportional to 135,246.18, 186,638.13 and 74,812.08 is: 103,239.79
Step by Step Solution
- Step 1: Write the proportion equation
135,246.18 : 186,638.13 = 74,812.08 : x - Step 2: Convert to fraction form
135,246.18/186,638.13 = 74,812.08/x - Step 3: Cross multiply
135,246.18x = 186,638.13 × 74,812.08 - Step 4: Simplify right side
135,246.18x = 13,962,786,712.61 - Step 5: Solve for x
x = 13,962,786,712.61/135,246.18 - Step 6: Final answer
x = 103,239.79
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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.