Finding the Fourth Proportional to 86,703.05, 130,054.58 and 81,519.05
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Solution
The fourth proportional to 86,703.05, 130,054.58 and 81,519.05 is: 122,278.58
Step by Step Solution
- Step 1: Write the proportion equation
86,703.05 : 130,054.58 = 81,519.05 : x - Step 2: Convert to fraction form
86,703.05/130,054.58 = 81,519.05/x - Step 3: Cross multiply
86,703.05x = 130,054.58 × 81,519.05 - Step 4: Simplify right side
86,703.05x = 10,601,925,402.15 - Step 5: Solve for x
x = 10,601,925,402.15/86,703.05 - Step 6: Final answer
x = 122,278.58
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.