Finding the Fourth Proportional to 131,629.08, 181,652.30 and 72,013.08
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Solution
The fourth proportional to 131,629.08, 181,652.30 and 72,013.08 is: 99,380.33
Step by Step Solution
- Step 1: Write the proportion equation
131,629.08 : 181,652.30 = 72,013.08 : x - Step 2: Convert to fraction form
131,629.08/181,652.30 = 72,013.08/x - Step 3: Cross multiply
131,629.08x = 181,652.30 × 72,013.08 - Step 4: Simplify right side
131,629.08x = 13,081,341,612.08 - Step 5: Solve for x
x = 13,081,341,612.08/131,629.08 - Step 6: Final answer
x = 99,380.33
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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.