Finding the Fourth Proportional to 143,312.68, 214,968.74 and 38,131.66
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Solution
The fourth proportional to 143,312.68, 214,968.74 and 38,131.66 is: 57,197.42
Step by Step Solution
- Step 1: Write the proportion equation
143,312.68 : 214,968.74 = 38,131.66 : x - Step 2: Convert to fraction form
143,312.68/214,968.74 = 38,131.66/x - Step 3: Cross multiply
143,312.68x = 214,968.74 × 38,131.66 - Step 4: Simplify right side
143,312.68x = 8,197,114,904.31 - Step 5: Solve for x
x = 8,197,114,904.31/143,312.68 - Step 6: Final answer
x = 57,197.42
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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.