Finding the Fourth Proportional to 144,953.80, 217,430.70 and 91,809.70
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Solution
The fourth proportional to 144,953.80, 217,430.70 and 91,809.70 is: 137,714.55
Step by Step Solution
- Step 1: Write the proportion equation
144,953.80 : 217,430.70 = 91,809.70 : x - Step 2: Convert to fraction form
144,953.80/217,430.70 = 91,809.70/x - Step 3: Cross multiply
144,953.80x = 217,430.70 × 91,809.70 - Step 4: Simplify right side
144,953.80x = 19,962,247,337.79 - Step 5: Solve for x
x = 19,962,247,337.79/144,953.80 - Step 6: Final answer
x = 137,714.55
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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.