Finding the Fourth Proportional to 125,113.21, 172,698.31 and 76,054.65
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Solution
The fourth proportional to 125,113.21, 172,698.31 and 76,054.65 is: 104,980.99
Step by Step Solution
- Step 1: Write the proportion equation
125,113.21 : 172,698.31 = 76,054.65 : x - Step 2: Convert to fraction form
125,113.21/172,698.31 = 76,054.65/x - Step 3: Cross multiply
125,113.21x = 172,698.31 × 76,054.65 - Step 4: Simplify right side
125,113.21x = 13,134,508,970.09 - Step 5: Solve for x
x = 13,134,508,970.09/125,113.21 - Step 6: Final answer
x = 104,980.99
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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.