Finding the Fourth Proportional to 156,720.68, 216,274.54 and 89,652.68
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Solution
The fourth proportional to 156,720.68, 216,274.54 and 89,652.68 is: 123,720.70
Step by Step Solution
- Step 1: Write the proportion equation
156,720.68 : 216,274.54 = 89,652.68 : x - Step 2: Convert to fraction form
156,720.68/216,274.54 = 89,652.68/x - Step 3: Cross multiply
156,720.68x = 216,274.54 × 89,652.68 - Step 4: Simplify right side
156,720.68x = 19,389,592,126.77 - Step 5: Solve for x
x = 19,389,592,126.77/156,720.68 - Step 6: Final answer
x = 123,720.70
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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.