Finding the Fourth Proportional to 147,391.61, 203,405.87 and 83,740.19
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Solution
The fourth proportional to 147,391.61, 203,405.87 and 83,740.19 is: 115,564.55
Step by Step Solution
- Step 1: Write the proportion equation
147,391.61 : 203,405.87 = 83,740.19 : x - Step 2: Convert to fraction form
147,391.61/203,405.87 = 83,740.19/x - Step 3: Cross multiply
147,391.61x = 203,405.87 × 83,740.19 - Step 4: Simplify right side
147,391.61x = 17,033,245,782.21 - Step 5: Solve for x
x = 17,033,245,782.21/147,391.61 - Step 6: Final answer
x = 115,564.55
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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.