Finding the Fourth Proportional to 130,531.08, 180,137.34 and 73,172.82
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Solution
The fourth proportional to 130,531.08, 180,137.34 and 73,172.82 is: 100,980.99
Step by Step Solution
- Step 1: Write the proportion equation
130,531.08 : 180,137.34 = 73,172.82 : x - Step 2: Convert to fraction form
130,531.08/180,137.34 = 73,172.82/x - Step 3: Cross multiply
130,531.08x = 180,137.34 × 73,172.82 - Step 4: Simplify right side
130,531.08x = 13,181,157,155.10 - Step 5: Solve for x
x = 13,181,157,155.10/130,531.08 - Step 6: Final answer
x = 100,980.99
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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.