Finding the Fourth Proportional to 131,690.13, 181,733.88 and 74,332.63
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Solution
The fourth proportional to 131,690.13, 181,733.88 and 74,332.63 is: 102,579.88
Step by Step Solution
- Step 1: Write the proportion equation
131,690.13 : 181,733.88 = 74,332.63 : x - Step 2: Convert to fraction form
131,690.13/181,733.88 = 74,332.63/x - Step 3: Cross multiply
131,690.13x = 181,733.88 × 74,332.63 - Step 4: Simplify right side
131,690.13x = 13,508,757,766.42 - Step 5: Solve for x
x = 13,508,757,766.42/131,690.13 - Step 6: Final answer
x = 102,579.88
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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.