Finding the Fourth Proportional to 186,437.70, 279,656.55 and 81,461.70
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Solution
The fourth proportional to 186,437.70, 279,656.55 and 81,461.70 is: 122,192.55
Step by Step Solution
- Step 1: Write the proportion equation
186,437.70 : 279,656.55 = 81,461.70 : x - Step 2: Convert to fraction form
186,437.70/279,656.55 = 81,461.70/x - Step 3: Cross multiply
186,437.70x = 279,656.55 × 81,461.70 - Step 4: Simplify right side
186,437.70x = 22,781,297,979.14 - Step 5: Solve for x
x = 22,781,297,979.14/186,437.70 - Step 6: Final answer
x = 122,192.55
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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.