Finding the Fourth Proportional to 138,153.84, 207,230.80 and 38,339.16
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Solution
The fourth proportional to 138,153.84, 207,230.80 and 38,339.16 is: 57,508.75
Step by Step Solution
- Step 1: Write the proportion equation
138,153.84 : 207,230.80 = 38,339.16 : x - Step 2: Convert to fraction form
138,153.84/207,230.80 = 38,339.16/x - Step 3: Cross multiply
138,153.84x = 207,230.80 × 38,339.16 - Step 4: Simplify right side
138,153.84x = 7,945,054,798.13 - Step 5: Solve for x
x = 7,945,054,798.13/138,153.84 - Step 6: Final answer
x = 57,508.75
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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.