Finding the Fourth Proportional to 142,214.20, 213,263.70 and 48,671.80
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Solution
The fourth proportional to 142,214.20, 213,263.70 and 48,671.80 is: 72,987.99
Step by Step Solution
- Step 1: Write the proportion equation
142,214.20 : 213,263.70 = 48,671.80 : x - Step 2: Convert to fraction form
142,214.20/213,263.70 = 48,671.80/x - Step 3: Cross multiply
142,214.20x = 213,263.70 × 48,671.80 - Step 4: Simplify right side
142,214.20x = 10,379,928,153.66 - Step 5: Solve for x
x = 10,379,928,153.66/142,214.20 - Step 6: Final answer
x = 72,987.99
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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.