Finding the Fourth Proportional to 140,055.12, 209,727.86 and 86,850.99
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Solution
The fourth proportional to 140,055.12, 209,727.86 and 86,850.99 is: 130,056.45
Step by Step Solution
- Step 1: Write the proportion equation
140,055.12 : 209,727.86 = 86,850.99 : x - Step 2: Convert to fraction form
140,055.12/209,727.86 = 86,850.99/x - Step 3: Cross multiply
140,055.12x = 209,727.86 × 86,850.99 - Step 4: Simplify right side
140,055.12x = 18,215,071,837.33 - Step 5: Solve for x
x = 18,215,071,837.33/140,055.12 - Step 6: Final answer
x = 130,056.45
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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.