Finding the Fourth Proportional to 157,686.40, 236,456.70 and 68,894.20
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Solution
The fourth proportional to 157,686.40, 236,456.70 and 68,894.20 is: 103,309.45
Step by Step Solution
- Step 1: Write the proportion equation
157,686.40 : 236,456.70 = 68,894.20 : x - Step 2: Convert to fraction form
157,686.40/236,456.70 = 68,894.20/x - Step 3: Cross multiply
157,686.40x = 236,456.70 × 68,894.20 - Step 4: Simplify right side
157,686.40x = 16,290,495,181.14 - Step 5: Solve for x
x = 16,290,495,181.14/157,686.40 - Step 6: Final answer
x = 103,309.45
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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.