Finding the Fourth Proportional to 117,931.36, 177,020.16 and 103,982.08
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Solution
The fourth proportional to 117,931.36, 177,020.16 and 103,982.08 is: 156,081.68
Step by Step Solution
- Step 1: Write the proportion equation
117,931.36 : 177,020.16 = 103,982.08 : x - Step 2: Convert to fraction form
117,931.36/177,020.16 = 103,982.08/x - Step 3: Cross multiply
117,931.36x = 177,020.16 × 103,982.08 - Step 4: Simplify right side
117,931.36x = 18,406,924,438.73 - Step 5: Solve for x
x = 18,406,924,438.73/117,931.36 - Step 6: Final answer
x = 156,081.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.