Finding the Fourth Proportional to 155,708.84, 214,833.75 and 87,702.05
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Solution
The fourth proportional to 155,708.84, 214,833.75 and 87,702.05 is: 121,003.79
Step by Step Solution
- Step 1: Write the proportion equation
155,708.84 : 214,833.75 = 87,702.05 : x - Step 2: Convert to fraction form
155,708.84/214,833.75 = 87,702.05/x - Step 3: Cross multiply
155,708.84x = 214,833.75 × 87,702.05 - Step 4: Simplify right side
155,708.84x = 18,841,360,492.39 - Step 5: Solve for x
x = 18,841,360,492.39/155,708.84 - Step 6: Final answer
x = 121,003.79
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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.