Finding the Fourth Proportional to 156,409.73, 215,929.18 and 122,345.84
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Solution
The fourth proportional to 156,409.73, 215,929.18 and 122,345.84 is: 168,902.76
Step by Step Solution
- Step 1: Write the proportion equation
156,409.73 : 215,929.18 = 122,345.84 : x - Step 2: Convert to fraction form
156,409.73/215,929.18 = 122,345.84/x - Step 3: Cross multiply
156,409.73x = 215,929.18 × 122,345.84 - Step 4: Simplify right side
156,409.73x = 26,418,035,216.24 - Step 5: Solve for x
x = 26,418,035,216.24/156,409.73 - Step 6: Final answer
x = 168,902.76
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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.