Finding the Fourth Proportional to 149,866.24, 206,812.99 and 81,881.75
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Solution
The fourth proportional to 149,866.24, 206,812.99 and 81,881.75 is: 112,995.49
Step by Step Solution
- Step 1: Write the proportion equation
149,866.24 : 206,812.99 = 81,881.75 : x - Step 2: Convert to fraction form
149,866.24/206,812.99 = 81,881.75/x - Step 3: Cross multiply
149,866.24x = 206,812.99 × 81,881.75 - Step 4: Simplify right side
149,866.24x = 16,934,209,543.93 - Step 5: Solve for x
x = 16,934,209,543.93/149,866.24 - Step 6: Final answer
x = 112,995.49
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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.