Finding the Fourth Proportional to 137,416.17, 189,654.35 and 76,990.91
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Solution
The fourth proportional to 137,416.17, 189,654.35 and 76,990.91 is: 106,258.67
Step by Step Solution
- Step 1: Write the proportion equation
137,416.17 : 189,654.35 = 76,990.91 : x - Step 2: Convert to fraction form
137,416.17/189,654.35 = 76,990.91/x - Step 3: Cross multiply
137,416.17x = 189,654.35 × 76,990.91 - Step 4: Simplify right side
137,416.17x = 14,601,659,983.54 - Step 5: Solve for x
x = 14,601,659,983.54/137,416.17 - Step 6: Final answer
x = 106,258.67
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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.