Finding the Fourth Proportional to 149,430.99, 206,213.45 and 81,447.96
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Solution
The fourth proportional to 149,430.99, 206,213.45 and 81,447.96 is: 112,397.47
Step by Step Solution
- Step 1: Write the proportion equation
149,430.99 : 206,213.45 = 81,447.96 : x - Step 2: Convert to fraction form
149,430.99/206,213.45 = 81,447.96/x - Step 3: Cross multiply
149,430.99x = 206,213.45 × 81,447.96 - Step 4: Simplify right side
149,430.99x = 16,795,664,827.06 - Step 5: Solve for x
x = 16,795,664,827.06/149,430.99 - Step 6: Final answer
x = 112,397.47
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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.