Finding the Fourth Proportional to 157,692.40, 236,465.70 and 68,900.20
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Solution
The fourth proportional to 157,692.40, 236,465.70 and 68,900.20 is: 103,318.45
Step by Step Solution
- Step 1: Write the proportion equation
157,692.40 : 236,465.70 = 68,900.20 : x - Step 2: Convert to fraction form
157,692.40/236,465.70 = 68,900.20/x - Step 3: Cross multiply
157,692.40x = 236,465.70 × 68,900.20 - Step 4: Simplify right side
157,692.40x = 16,292,534,023.14 - Step 5: Solve for x
x = 16,292,534,023.14/157,692.40 - Step 6: Final answer
x = 103,318.45
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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.