Finding the Fourth Proportional to 157,220.81, 216,953.76 and 89,239.17
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Solution
The fourth proportional to 157,220.81, 216,953.76 and 89,239.17 is: 123,143.84
Step by Step Solution
- Step 1: Write the proportion equation
157,220.81 : 216,953.76 = 89,239.17 : x - Step 2: Convert to fraction form
157,220.81/216,953.76 = 89,239.17/x - Step 3: Cross multiply
157,220.81x = 216,953.76 × 89,239.17 - Step 4: Simplify right side
157,220.81x = 19,360,773,470.78 - Step 5: Solve for x
x = 19,360,773,470.78/157,220.81 - Step 6: Final answer
x = 123,143.84
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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.