Finding the Fourth Proportional to 128,742.08, 193,166.46 and 69,508.13
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Solution
The fourth proportional to 128,742.08, 193,166.46 and 69,508.13 is: 104,290.99
Step by Step Solution
- Step 1: Write the proportion equation
128,742.08 : 193,166.46 = 69,508.13 : x - Step 2: Convert to fraction form
128,742.08/193,166.46 = 69,508.13/x - Step 3: Cross multiply
128,742.08x = 193,166.46 × 69,508.13 - Step 4: Simplify right side
128,742.08x = 13,426,638,447.49 - Step 5: Solve for x
x = 13,426,638,447.49/128,742.08 - Step 6: Final answer
x = 104,290.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.