Finding the Fourth Proportional to 157,118.70, 216,828.70 and 89,138.53
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Solution
The fourth proportional to 157,118.70, 216,828.70 and 89,138.53 is: 123,013.95
Step by Step Solution
- Step 1: Write the proportion equation
157,118.70 : 216,828.70 = 89,138.53 : x - Step 2: Convert to fraction form
157,118.70/216,828.70 = 89,138.53/x - Step 3: Cross multiply
157,118.70x = 216,828.70 × 89,138.53 - Step 4: Simplify right side
157,118.70x = 19,327,791,579.81 - Step 5: Solve for x
x = 19,327,791,579.81/157,118.70 - Step 6: Final answer
x = 123,013.95
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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.