Finding the Fourth Proportional to 124,358.70, 186,428.70 and 74,458.65
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Solution
The fourth proportional to 124,358.70, 186,428.70 and 74,458.65 is: 111,622.50
Step by Step Solution
- Step 1: Write the proportion equation
124,358.70 : 186,428.70 = 74,458.65 : x - Step 2: Convert to fraction form
124,358.70/186,428.70 = 74,458.65/x - Step 3: Cross multiply
124,358.70x = 186,428.70 × 74,458.65 - Step 4: Simplify right side
124,358.70x = 13,881,229,323.26 - Step 5: Solve for x
x = 13,881,229,323.26/124,358.70 - Step 6: Final answer
x = 111,622.50
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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.