Finding the Fourth Proportional to 98,167.76, 135,403.08 and 74,217.68
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Solution
The fourth proportional to 98,167.76, 135,403.08 and 74,217.68 is: 102,368.66
Step by Step Solution
- Step 1: Write the proportion equation
98,167.76 : 135,403.08 = 74,217.68 : x - Step 2: Convert to fraction form
98,167.76/135,403.08 = 74,217.68/x - Step 3: Cross multiply
98,167.76x = 135,403.08 × 74,217.68 - Step 4: Simplify right side
98,167.76x = 10,049,302,462.45 - Step 5: Solve for x
x = 10,049,302,462.45/98,167.76 - Step 6: Final answer
x = 102,368.66
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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.