Finding the Fourth Proportional to 135,029.63, 186,340.91 and 78,444.65
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Solution
The fourth proportional to 135,029.63, 186,340.91 and 78,444.65 is: 108,253.62
Step by Step Solution
- Step 1: Write the proportion equation
135,029.63 : 186,340.91 = 78,444.65 : x - Step 2: Convert to fraction form
135,029.63/186,340.91 = 78,444.65/x - Step 3: Cross multiply
135,029.63x = 186,340.91 × 78,444.65 - Step 4: Simplify right side
135,029.63x = 14,617,446,141.70 - Step 5: Solve for x
x = 14,617,446,141.70/135,029.63 - Step 6: Final answer
x = 108,253.62
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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.