Finding the Fourth Proportional to 149,656.05, 206,518.95 and 81,671.31
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Solution
The fourth proportional to 149,656.05, 206,518.95 and 81,671.31 is: 112,702.92
Step by Step Solution
- Step 1: Write the proportion equation
149,656.05 : 206,518.95 = 81,671.31 : x - Step 2: Convert to fraction form
149,656.05/206,518.95 = 81,671.31/x - Step 3: Cross multiply
149,656.05x = 206,518.95 × 81,671.31 - Step 4: Simplify right side
149,656.05x = 16,866,673,186.32 - Step 5: Solve for x
x = 16,866,673,186.32/149,656.05 - Step 6: Final answer
x = 112,702.92
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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.