Finding the Fourth Proportional to 156,424.08, 215,808.66 and 102,738.18
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Solution
The fourth proportional to 156,424.08, 215,808.66 and 102,738.18 is: 141,741.53
Step by Step Solution
- Step 1: Write the proportion equation
156,424.08 : 215,808.66 = 102,738.18 : x - Step 2: Convert to fraction form
156,424.08/215,808.66 = 102,738.18/x - Step 3: Cross multiply
156,424.08x = 215,808.66 × 102,738.18 - Step 4: Simplify right side
156,424.08x = 22,171,788,956.64 - Step 5: Solve for x
x = 22,171,788,956.64/156,424.08 - Step 6: Final answer
x = 141,741.53
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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.