Finding the Fourth Proportional to 131,625.30, 197,437.95 and 103,631.70
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Solution
The fourth proportional to 131,625.30, 197,437.95 and 103,631.70 is: 155,447.55
Step by Step Solution
- Step 1: Write the proportion equation
131,625.30 : 197,437.95 = 103,631.70 : x - Step 2: Convert to fraction form
131,625.30/197,437.95 = 103,631.70/x - Step 3: Cross multiply
131,625.30x = 197,437.95 × 103,631.70 - Step 4: Simplify right side
131,625.30x = 20,460,830,403.02 - Step 5: Solve for x
x = 20,460,830,403.02/131,625.30 - Step 6: Final answer
x = 155,447.55
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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.