Finding the Fourth Proportional to 103,541.27, 155,312.12 and 28,661.63
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Solution
The fourth proportional to 103,541.27, 155,312.12 and 28,661.63 is: 42,992.50
Step by Step Solution
- Step 1: Write the proportion equation
103,541.27 : 155,312.12 = 28,661.63 : x - Step 2: Convert to fraction form
103,541.27/155,312.12 = 28,661.63/x - Step 3: Cross multiply
103,541.27x = 155,312.12 × 28,661.63 - Step 4: Simplify right side
103,541.27x = 4,451,497,813.05 - Step 5: Solve for x
x = 4,451,497,813.05/103,541.27 - Step 6: Final answer
x = 42,992.50
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1.5x scale
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.