Finding the Fourth Proportional to 156,809.99, 216,397.62 and 85,189.53
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Solution
The fourth proportional to 156,809.99, 216,397.62 and 85,189.53 is: 117,561.46
Step by Step Solution
- Step 1: Write the proportion equation
156,809.99 : 216,397.62 = 85,189.53 : x - Step 2: Convert to fraction form
156,809.99/216,397.62 = 85,189.53/x - Step 3: Cross multiply
156,809.99x = 216,397.62 × 85,189.53 - Step 4: Simplify right side
156,809.99x = 18,434,811,540.92 - Step 5: Solve for x
x = 18,434,811,540.92/156,809.99 - Step 6: Final answer
x = 117,561.46
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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.