Finding the Fourth Proportional to 138,596.84, 191,263.91 and 74,934.63
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Solution
The fourth proportional to 138,596.84, 191,263.91 and 74,934.63 is: 103,409.94
Step by Step Solution
- Step 1: Write the proportion equation
138,596.84 : 191,263.91 = 74,934.63 : x - Step 2: Convert to fraction form
138,596.84/191,263.91 = 74,934.63/x - Step 3: Cross multiply
138,596.84x = 191,263.91 × 74,934.63 - Step 4: Simplify right side
138,596.84x = 14,332,289,953.53 - Step 5: Solve for x
x = 14,332,289,953.53/138,596.84 - Step 6: Final answer
x = 103,409.94
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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.