Finding the Fourth Proportional to 155,988.09, 215,257.91 and 97,876.15
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Solution
The fourth proportional to 155,988.09, 215,257.91 and 97,876.15 is: 135,065.54
Step by Step Solution
- Step 1: Write the proportion equation
155,988.09 : 215,257.91 = 97,876.15 : x - Step 2: Convert to fraction form
155,988.09/215,257.91 = 97,876.15/x - Step 3: Cross multiply
155,988.09x = 215,257.91 × 97,876.15 - Step 4: Simplify right side
155,988.09x = 21,068,616,581.29 - Step 5: Solve for x
x = 21,068,616,581.29/155,988.09 - Step 6: Final answer
x = 135,065.54
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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.