Finding the Fourth Proportional to 157,805.34, 217,775.16 and 86,184.75
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Solution
The fourth proportional to 157,805.34, 217,775.16 and 86,184.75 is: 118,937.03
Step by Step Solution
- Step 1: Write the proportion equation
157,805.34 : 217,775.16 = 86,184.75 : x - Step 2: Convert to fraction form
157,805.34/217,775.16 = 86,184.75/x - Step 3: Cross multiply
157,805.34x = 217,775.16 × 86,184.75 - Step 4: Simplify right side
157,805.34x = 18,768,897,720.81 - Step 5: Solve for x
x = 18,768,897,720.81/157,805.34 - Step 6: Final answer
x = 118,937.03
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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.