Finding the Fourth Proportional to 127,739.79, 176,267.43 and 74,041.65
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Solution
The fourth proportional to 127,739.79, 176,267.43 and 74,041.65 is: 102,169.66
Step by Step Solution
- Step 1: Write the proportion equation
127,739.79 : 176,267.43 = 74,041.65 : x - Step 2: Convert to fraction form
127,739.79/176,267.43 = 74,041.65/x - Step 3: Cross multiply
127,739.79x = 176,267.43 × 74,041.65 - Step 4: Simplify right side
127,739.79x = 13,051,131,358.46 - Step 5: Solve for x
x = 13,051,131,358.46/127,739.79 - Step 6: Final answer
x = 102,169.66
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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.