Finding the Fourth Proportional to 157,689.40, 236,534.10 and 134,069.80
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Solution
The fourth proportional to 157,689.40, 236,534.10 and 134,069.80 is: 201,104.70
Step by Step Solution
- Step 1: Write the proportion equation
157,689.40 : 236,534.10 = 134,069.80 : x - Step 2: Convert to fraction form
157,689.40/236,534.10 = 134,069.80/x - Step 3: Cross multiply
157,689.40x = 236,534.10 × 134,069.80 - Step 4: Simplify right side
157,689.40x = 31,712,079,480.18 - Step 5: Solve for x
x = 31,712,079,480.18/157,689.40 - Step 6: Final answer
x = 201,104.70
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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.