Finding the Fourth Proportional to 157,983.18, 236,765.16 and 69,139.95
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Solution
The fourth proportional to 157,983.18, 236,765.16 and 69,139.95 is: 103,618.19
Step by Step Solution
- Step 1: Write the proportion equation
157,983.18 : 236,765.16 = 69,139.95 : x - Step 2: Convert to fraction form
157,983.18/236,765.16 = 69,139.95/x - Step 3: Cross multiply
157,983.18x = 236,765.16 × 69,139.95 - Step 4: Simplify right side
157,983.18x = 16,369,931,324.14 - Step 5: Solve for x
x = 16,369,931,324.14/157,983.18 - Step 6: Final answer
x = 103,618.19
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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.