Finding the Fourth Proportional to 124,730.96, 172,128.84 and 68,143.28
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Solution
The fourth proportional to 124,730.96, 172,128.84 and 68,143.28 is: 94,037.79
Step by Step Solution
- Step 1: Write the proportion equation
124,730.96 : 172,128.84 = 68,143.28 : x - Step 2: Convert to fraction form
124,730.96/172,128.84 = 68,143.28/x - Step 3: Cross multiply
124,730.96x = 172,128.84 × 68,143.28 - Step 4: Simplify right side
124,730.96x = 11,729,423,740.20 - Step 5: Solve for x
x = 11,729,423,740.20/124,730.96 - Step 6: Final answer
x = 94,037.79
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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.