Finding the Fourth Proportional to 136,749.08, 188,713.32 and 76,319.06
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Solution
The fourth proportional to 136,749.08, 188,713.32 and 76,319.06 is: 105,320.07
Step by Step Solution
- Step 1: Write the proportion equation
136,749.08 : 188,713.32 = 76,319.06 : x - Step 2: Convert to fraction form
136,749.08/188,713.32 = 76,319.06/x - Step 3: Cross multiply
136,749.08x = 188,713.32 × 76,319.06 - Step 4: Simplify right side
136,749.08x = 14,402,423,191.88 - Step 5: Solve for x
x = 14,402,423,191.88/136,749.08 - Step 6: Final answer
x = 105,320.07
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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.