Finding the Fourth Proportional to 138,430.08, 191,047.68 and 84,750.56
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Solution
The fourth proportional to 138,430.08, 191,047.68 and 84,750.56 is: 116,964.45
Step by Step Solution
- Step 1: Write the proportion equation
138,430.08 : 191,047.68 = 84,750.56 : x - Step 2: Convert to fraction form
138,430.08/191,047.68 = 84,750.56/x - Step 3: Cross multiply
138,430.08x = 191,047.68 × 84,750.56 - Step 4: Simplify right side
138,430.08x = 16,191,397,866.70 - Step 5: Solve for x
x = 16,191,397,866.70/138,430.08 - Step 6: Final answer
x = 116,964.45
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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.