Finding the Fourth Proportional to 157,657.79, 217,572.35 and 86,042.45
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Solution
The fourth proportional to 157,657.79, 217,572.35 and 86,042.45 is: 118,741.09
Step by Step Solution
- Step 1: Write the proportion equation
157,657.79 : 217,572.35 = 86,042.45 : x - Step 2: Convert to fraction form
157,657.79/217,572.35 = 86,042.45/x - Step 3: Cross multiply
157,657.79x = 217,572.35 × 86,042.45 - Step 4: Simplify right side
157,657.79x = 18,720,458,159.98 - Step 5: Solve for x
x = 18,720,458,159.98/157,657.79 - Step 6: Final answer
x = 118,741.09
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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.