Finding the Fourth Proportional to 135,706.84, 187,275.60 and 79,129.15
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Solution
The fourth proportional to 135,706.84, 187,275.60 and 79,129.15 is: 109,198.32
Step by Step Solution
- Step 1: Write the proportion equation
135,706.84 : 187,275.60 = 79,129.15 : x - Step 2: Convert to fraction form
135,706.84/187,275.60 = 79,129.15/x - Step 3: Cross multiply
135,706.84x = 187,275.60 × 79,129.15 - Step 4: Simplify right side
135,706.84x = 14,818,959,043.74 - Step 5: Solve for x
x = 14,818,959,043.74/135,706.84 - Step 6: Final answer
x = 109,198.32
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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.