Finding the Fourth Proportional to 159,743.20, 220,442.86 and 88,130.08
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Solution
The fourth proportional to 159,743.20, 220,442.86 and 88,130.08 is: 121,617.99
Step by Step Solution
- Step 1: Write the proportion equation
159,743.20 : 220,442.86 = 88,130.08 : x - Step 2: Convert to fraction form
159,743.20/220,442.86 = 88,130.08/x - Step 3: Cross multiply
159,743.20x = 220,442.86 × 88,130.08 - Step 4: Simplify right side
159,743.20x = 19,427,646,887.23 - Step 5: Solve for x
x = 19,427,646,887.23/159,743.20 - Step 6: Final answer
x = 121,617.99
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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.