Finding the Fourth Proportional to 157,937.48, 217,953.36 and 86,318.02
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Solution
The fourth proportional to 157,937.48, 217,953.36 and 86,318.02 is: 119,118.67
Step by Step Solution
- Step 1: Write the proportion equation
157,937.48 : 217,953.36 = 86,318.02 : x - Step 2: Convert to fraction form
157,937.48/217,953.36 = 86,318.02/x - Step 3: Cross multiply
157,937.48x = 217,953.36 × 86,318.02 - Step 4: Simplify right side
157,937.48x = 18,813,302,487.55 - Step 5: Solve for x
x = 18,813,302,487.55/157,937.48 - Step 6: Final answer
x = 119,118.67
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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.