Finding the Fourth Proportional to 126,420.26, 174,465.26 and 72,705.32
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Solution
The fourth proportional to 126,420.26, 174,465.26 and 72,705.32 is: 100,336.39
Step by Step Solution
- Step 1: Write the proportion equation
126,420.26 : 174,465.26 = 72,705.32 : x - Step 2: Convert to fraction form
126,420.26/174,465.26 = 72,705.32/x - Step 3: Cross multiply
126,420.26x = 174,465.26 × 72,705.32 - Step 4: Simplify right side
126,420.26x = 12,684,552,657.19 - Step 5: Solve for x
x = 12,684,552,657.19/126,420.26 - Step 6: Final answer
x = 100,336.39
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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.