Finding the Fourth Proportional to 138,075.84, 207,090.64 and 38,246.08
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Solution
The fourth proportional to 138,075.84, 207,090.64 and 38,246.08 is: 57,362.72
Step by Step Solution
- Step 1: Write the proportion equation
138,075.84 : 207,090.64 = 38,246.08 : x - Step 2: Convert to fraction form
138,075.84/207,090.64 = 38,246.08/x - Step 3: Cross multiply
138,075.84x = 207,090.64 × 38,246.08 - Step 4: Simplify right side
138,075.84x = 7,920,405,184.69 - Step 5: Solve for x
x = 7,920,405,184.69/138,075.84 - Step 6: Final answer
x = 57,362.72
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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.