Finding the Fourth Proportional to 157,368.20, 236,169.84 and 90,719.36
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Solution
The fourth proportional to 157,368.20, 236,169.84 and 90,719.36 is: 136,146.80
Step by Step Solution
- Step 1: Write the proportion equation
157,368.20 : 236,169.84 = 90,719.36 : x - Step 2: Convert to fraction form
157,368.20/236,169.84 = 90,719.36/x - Step 3: Cross multiply
157,368.20x = 236,169.84 × 90,719.36 - Step 4: Simplify right side
157,368.20x = 21,425,176,736.10 - Step 5: Solve for x
x = 21,425,176,736.10/157,368.20 - Step 6: Final answer
x = 136,146.80
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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.