Finding the Fourth Proportional to 157,227.21, 216,970.74 and 85,605.93
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Solution
The fourth proportional to 157,227.21, 216,970.74 and 85,605.93 is: 118,134.65
Step by Step Solution
- Step 1: Write the proportion equation
157,227.21 : 216,970.74 = 85,605.93 : x - Step 2: Convert to fraction form
157,227.21/216,970.74 = 85,605.93/x - Step 3: Cross multiply
157,227.21x = 216,970.74 × 85,605.93 - Step 4: Simplify right side
157,227.21x = 18,573,981,980.49 - Step 5: Solve for x
x = 18,573,981,980.49/157,227.21 - Step 6: Final answer
x = 118,134.65
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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.