Finding the Fourth Proportional to 124,981.12, 172,473.96 and 68,392.50
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Solution
The fourth proportional to 124,981.12, 172,473.96 and 68,392.50 is: 94,381.66
Step by Step Solution
- Step 1: Write the proportion equation
124,981.12 : 172,473.96 = 68,392.50 : x - Step 2: Convert to fraction form
124,981.12/172,473.96 = 68,392.50/x - Step 3: Cross multiply
124,981.12x = 172,473.96 × 68,392.50 - Step 4: Simplify right side
124,981.12x = 11,795,925,309.30 - Step 5: Solve for x
x = 11,795,925,309.30/124,981.12 - Step 6: Final answer
x = 94,381.66
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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.