Finding the Fourth Proportional to 124,712.70, 186,959.70 and 74,812.65
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Solution
The fourth proportional to 124,712.70, 186,959.70 and 74,812.65 is: 112,153.38
Step by Step Solution
- Step 1: Write the proportion equation
124,712.70 : 186,959.70 = 74,812.65 : x - Step 2: Convert to fraction form
124,712.70/186,959.70 = 74,812.65/x - Step 3: Cross multiply
124,712.70x = 186,959.70 × 74,812.65 - Step 4: Simplify right side
124,712.70x = 13,986,950,600.21 - Step 5: Solve for x
x = 13,986,950,600.21/124,712.70 - Step 6: Final answer
x = 112,153.38
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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.