Finding the Fourth Proportional to 135,078.84, 186,363.99 and 81,343.44
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Solution
The fourth proportional to 135,078.84, 186,363.99 and 81,343.44 is: 112,226.96
Step by Step Solution
- Step 1: Write the proportion equation
135,078.84 : 186,363.99 = 81,343.44 : x - Step 2: Convert to fraction form
135,078.84/186,363.99 = 81,343.44/x - Step 3: Cross multiply
135,078.84x = 186,363.99 × 81,343.44 - Step 4: Simplify right side
135,078.84x = 15,159,488,038.73 - Step 5: Solve for x
x = 15,159,488,038.73/135,078.84 - Step 6: Final answer
x = 112,226.96
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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.