Finding the Fourth Proportional to 139,325.08, 208,959.66 and 68,217.06
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Solution
The fourth proportional to 139,325.08, 208,959.66 and 68,217.06 is: 102,311.90
Step by Step Solution
- Step 1: Write the proportion equation
139,325.08 : 208,959.66 = 68,217.06 : x - Step 2: Convert to fraction form
139,325.08/208,959.66 = 68,217.06/x - Step 3: Cross multiply
139,325.08x = 208,959.66 × 68,217.06 - Step 4: Simplify right side
139,325.08x = 14,254,613,663.80 - Step 5: Solve for x
x = 14,254,613,663.80/139,325.08 - Step 6: Final answer
x = 102,311.90
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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.