Finding the Fourth Proportional to 156,619.98, 216,135.74 and 85,000.05
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Solution
The fourth proportional to 156,619.98, 216,135.74 and 85,000.05 is: 117,300.16
Step by Step Solution
- Step 1: Write the proportion equation
156,619.98 : 216,135.74 = 85,000.05 : x - Step 2: Convert to fraction form
156,619.98/216,135.74 = 85,000.05/x - Step 3: Cross multiply
156,619.98x = 216,135.74 × 85,000.05 - Step 4: Simplify right side
156,619.98x = 18,371,548,919.29 - Step 5: Solve for x
x = 18,371,548,919.29/156,619.98 - Step 6: Final answer
x = 117,300.16
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1.5x scale
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.