Finding the Fourth Proportional to 157,877.84, 217,871.16 and 86,257.84
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Solution
The fourth proportional to 157,877.84, 217,871.16 and 86,257.84 is: 119,035.68
Step by Step Solution
- Step 1: Write the proportion equation
157,877.84 : 217,871.16 = 86,257.84 : x - Step 2: Convert to fraction form
157,877.84/217,871.16 = 86,257.84/x - Step 3: Cross multiply
157,877.84x = 217,871.16 × 86,257.84 - Step 4: Simplify right side
157,877.84x = 18,793,095,659.89 - Step 5: Solve for x
x = 18,793,095,659.89/157,877.84 - Step 6: Final answer
x = 119,035.68
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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.