Finding the Fourth Proportional to 122,772.12, 184,157.38 and 31,587.44
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Solution
The fourth proportional to 122,772.12, 184,157.38 and 31,587.44 is: 47,380.95
Step by Step Solution
- Step 1: Write the proportion equation
122,772.12 : 184,157.38 = 31,587.44 : x - Step 2: Convert to fraction form
122,772.12/184,157.38 = 31,587.44/x - Step 3: Cross multiply
122,772.12x = 184,157.38 × 31,587.44 - Step 4: Simplify right side
122,772.12x = 5,817,060,191.31 - Step 5: Solve for x
x = 5,817,060,191.31/122,772.12 - Step 6: Final answer
x = 47,380.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.