Finding the Fourth Proportional to 157,430.96, 217,248.42 and 85,809.48
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Solution
The fourth proportional to 157,430.96, 217,248.42 and 85,809.48 is: 118,413.65
Step by Step Solution
- Step 1: Write the proportion equation
157,430.96 : 217,248.42 = 85,809.48 : x - Step 2: Convert to fraction form
157,430.96/217,248.42 = 85,809.48/x - Step 3: Cross multiply
157,430.96x = 217,248.42 × 85,809.48 - Step 4: Simplify right side
157,430.96x = 18,641,973,951.02 - Step 5: Solve for x
x = 18,641,973,951.02/157,430.96 - Step 6: Final answer
x = 118,413.65
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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.