Finding the Fourth Proportional to 157,031.49, 216,707.91 and 85,416.09
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Solution
The fourth proportional to 157,031.49, 216,707.91 and 85,416.09 is: 117,876.63
Step by Step Solution
- Step 1: Write the proportion equation
157,031.49 : 216,707.91 = 85,416.09 : x - Step 2: Convert to fraction form
157,031.49/216,707.91 = 85,416.09/x - Step 3: Cross multiply
157,031.49x = 216,707.91 × 85,416.09 - Step 4: Simplify right side
157,031.49x = 18,510,342,344.27 - Step 5: Solve for x
x = 18,510,342,344.27/157,031.49 - Step 6: Final answer
x = 117,876.63
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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.