Finding the Fourth Proportional to 138,425.84, 191,027.70 and 74,763.62
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Solution
The fourth proportional to 138,425.84, 191,027.70 and 74,763.62 is: 103,173.82
Step by Step Solution
- Step 1: Write the proportion equation
138,425.84 : 191,027.70 = 74,763.62 : x - Step 2: Convert to fraction form
138,425.84/191,027.70 = 74,763.62/x - Step 3: Cross multiply
138,425.84x = 191,027.70 × 74,763.62 - Step 4: Simplify right side
138,425.84x = 14,281,922,372.27 - Step 5: Solve for x
x = 14,281,922,372.27/138,425.84 - Step 6: Final answer
x = 103,173.82
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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.