Finding the Fourth Proportional to 88,021.08, 121,538.88 and 81,304.20
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Solution
The fourth proportional to 88,021.08, 121,538.88 and 81,304.20 is: 112,264.26
Step by Step Solution
- Step 1: Write the proportion equation
88,021.08 : 121,538.88 = 81,304.20 : x - Step 2: Convert to fraction form
88,021.08/121,538.88 = 81,304.20/x - Step 3: Cross multiply
88,021.08x = 121,538.88 × 81,304.20 - Step 4: Simplify right side
88,021.08x = 9,881,621,407.30 - Step 5: Solve for x
x = 9,881,621,407.30/88,021.08 - Step 6: Final answer
x = 112,264.26
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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.