Finding the Fourth Proportional to 156,996.15, 216,659.56 and 89,015.99
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Solution
The fourth proportional to 156,996.15, 216,659.56 and 89,015.99 is: 122,844.83
Step by Step Solution
- Step 1: Write the proportion equation
156,996.15 : 216,659.56 = 89,015.99 : x - Step 2: Convert to fraction form
156,996.15/216,659.56 = 89,015.99/x - Step 3: Cross multiply
156,996.15x = 216,659.56 × 89,015.99 - Step 4: Simplify right side
156,996.15x = 19,286,164,696.79 - Step 5: Solve for x
x = 19,286,164,696.79/156,996.15 - Step 6: Final answer
x = 122,844.83
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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.