Finding the Fourth Proportional to 150,585.12, 207,813.98 and 90,144.06
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Solution
The fourth proportional to 150,585.12, 207,813.98 and 90,144.06 is: 124,402.70
Step by Step Solution
- Step 1: Write the proportion equation
150,585.12 : 207,813.98 = 90,144.06 : x - Step 2: Convert to fraction form
150,585.12/207,813.98 = 90,144.06/x - Step 3: Cross multiply
150,585.12x = 207,813.98 × 90,144.06 - Step 4: Simplify right side
150,585.12x = 18,733,195,431.24 - Step 5: Solve for x
x = 18,733,195,431.24/150,585.12 - Step 6: Final answer
x = 124,402.70
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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.