Finding the Fourth Proportional to 157,098.80, 235,648.20 and 115,272.43
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Solution
The fourth proportional to 157,098.80, 235,648.20 and 115,272.43 is: 172,908.65
Step by Step Solution
- Step 1: Write the proportion equation
157,098.80 : 235,648.20 = 115,272.43 : x - Step 2: Convert to fraction form
157,098.80/235,648.20 = 115,272.43/x - Step 3: Cross multiply
157,098.80x = 235,648.20 × 115,272.43 - Step 4: Simplify right side
157,098.80x = 27,163,740,639.13 - Step 5: Solve for x
x = 27,163,740,639.13/157,098.80 - Step 6: Final answer
x = 172,908.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.