Finding the Fourth Proportional to 149,745.32, 206,646.98 and 81,762.08
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Solution
The fourth proportional to 149,745.32, 206,646.98 and 81,762.08 is: 112,830.82
Step by Step Solution
- Step 1: Write the proportion equation
149,745.32 : 206,646.98 = 81,762.08 : x - Step 2: Convert to fraction form
149,745.32/206,646.98 = 81,762.08/x - Step 3: Cross multiply
149,745.32x = 206,646.98 × 81,762.08 - Step 4: Simplify right side
149,745.32x = 16,895,886,910.52 - Step 5: Solve for x
x = 16,895,886,910.52/149,745.32 - Step 6: Final answer
x = 112,830.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.