Finding the Fourth Proportional to 155,889.19, 214,983.61 and 102,154.69
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Solution
The fourth proportional to 155,889.19, 214,983.61 and 102,154.69 is: 140,879.45
Step by Step Solution
- Step 1: Write the proportion equation
155,889.19 : 214,983.61 = 102,154.69 : x - Step 2: Convert to fraction form
155,889.19/214,983.61 = 102,154.69/x - Step 3: Cross multiply
155,889.19x = 214,983.61 × 102,154.69 - Step 4: Simplify right side
155,889.19x = 21,961,584,034.63 - Step 5: Solve for x
x = 21,961,584,034.63/155,889.19 - Step 6: Final answer
x = 140,879.45
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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.