Finding the Fourth Proportional to 138,523.80, 207,267.30 and 91,867.80
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Solution
The fourth proportional to 138,523.80, 207,267.30 and 91,867.80 is: 137,457.90
Step by Step Solution
- Step 1: Write the proportion equation
138,523.80 : 207,267.30 = 91,867.80 : x - Step 2: Convert to fraction form
138,523.80/207,267.30 = 91,867.80/x - Step 3: Cross multiply
138,523.80x = 207,267.30 × 91,867.80 - Step 4: Simplify right side
138,523.80x = 19,041,190,862.94 - Step 5: Solve for x
x = 19,041,190,862.94/138,523.80 - Step 6: Final answer
x = 137,457.90
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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.