Finding the Fourth Proportional to 114,930.76, 158,514.57 and 74,657.49
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Solution
The fourth proportional to 114,930.76, 158,514.57 and 74,657.49 is: 102,968.95
Step by Step Solution
- Step 1: Write the proportion equation
114,930.76 : 158,514.57 = 74,657.49 : x - Step 2: Convert to fraction form
114,930.76/158,514.57 = 74,657.49/x - Step 3: Cross multiply
114,930.76x = 158,514.57 × 74,657.49 - Step 4: Simplify right side
114,930.76x = 11,834,299,924.63 - Step 5: Solve for x
x = 11,834,299,924.63/114,930.76 - Step 6: Final answer
x = 102,968.95
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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.