Finding the Fourth Proportional to 145,854.20, 218,781.30 and 130,107.80
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Solution
The fourth proportional to 145,854.20, 218,781.30 and 130,107.80 is: 195,161.70
Step by Step Solution
- Step 1: Write the proportion equation
145,854.20 : 218,781.30 = 130,107.80 : x - Step 2: Convert to fraction form
145,854.20/218,781.30 = 130,107.80/x - Step 3: Cross multiply
145,854.20x = 218,781.30 × 130,107.80 - Step 4: Simplify right side
145,854.20x = 28,465,153,624.14 - Step 5: Solve for x
x = 28,465,153,624.14/145,854.20 - Step 6: Final answer
x = 195,161.70
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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.