Finding the Fourth Proportional to 124,857.84, 172,303.80 and 68,269.20
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Solution
The fourth proportional to 124,857.84, 172,303.80 and 68,269.20 is: 94,211.49
Step by Step Solution
- Step 1: Write the proportion equation
124,857.84 : 172,303.80 = 68,269.20 : x - Step 2: Convert to fraction form
124,857.84/172,303.80 = 68,269.20/x - Step 3: Cross multiply
124,857.84x = 172,303.80 × 68,269.20 - Step 4: Simplify right side
124,857.84x = 11,763,042,582.96 - Step 5: Solve for x
x = 11,763,042,582.96/124,857.84 - Step 6: Final answer
x = 94,211.49
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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.