Finding the Fourth Proportional to 221,106.72, 305,128.28 and 125,618.65
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Solution
The fourth proportional to 221,106.72, 305,128.28 and 125,618.65 is: 173,354.31
Step by Step Solution
- Step 1: Write the proportion equation
221,106.72 : 305,128.28 = 125,618.65 : x - Step 2: Convert to fraction form
221,106.72/305,128.28 = 125,618.65/x - Step 3: Cross multiply
221,106.72x = 305,128.28 × 125,618.65 - Step 4: Simplify right side
221,106.72x = 38,329,802,610.42 - Step 5: Solve for x
x = 38,329,802,610.42/221,106.72 - Step 6: Final answer
x = 173,354.31
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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.