Finding the Fourth Proportional to 130,982.32, 180,755.84 and 74,393.70
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Solution
The fourth proportional to 130,982.32, 180,755.84 and 74,393.70 is: 102,663.44
Step by Step Solution
- Step 1: Write the proportion equation
130,982.32 : 180,755.84 = 74,393.70 : x - Step 2: Convert to fraction form
130,982.32/180,755.84 = 74,393.70/x - Step 3: Cross multiply
130,982.32x = 180,755.84 × 74,393.70 - Step 4: Simplify right side
130,982.32x = 13,447,095,734.21 - Step 5: Solve for x
x = 13,447,095,734.21/130,982.32 - Step 6: Final answer
x = 102,663.44
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1.5x scale
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.