Finding the Fourth Proportional to 136,313.60, 188,108.16 and 76,686.08
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Solution
The fourth proportional to 136,313.60, 188,108.16 and 76,686.08 is: 105,824.20
Step by Step Solution
- Step 1: Write the proportion equation
136,313.60 : 188,108.16 = 76,686.08 : x - Step 2: Convert to fraction form
136,313.60/188,108.16 = 76,686.08/x - Step 3: Cross multiply
136,313.60x = 188,108.16 × 76,686.08 - Step 4: Simplify right side
136,313.60x = 14,425,277,406.41 - Step 5: Solve for x
x = 14,425,277,406.41/136,313.60 - Step 6: Final answer
x = 105,824.20
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1.5x scale
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.