Finding the Fourth Proportional to 103,623.17, 155,434.74 and 68,554.64
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Solution
The fourth proportional to 103,623.17, 155,434.74 and 68,554.64 is: 102,831.95
Step by Step Solution
- Step 1: Write the proportion equation
103,623.17 : 155,434.74 = 68,554.64 : x - Step 2: Convert to fraction form
103,623.17/155,434.74 = 68,554.64/x - Step 3: Cross multiply
103,623.17x = 155,434.74 × 68,554.64 - Step 4: Simplify right side
103,623.17x = 10,655,772,644.19 - Step 5: Solve for x
x = 10,655,772,644.19/103,623.17 - Step 6: Final answer
x = 102,831.95
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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.