Finding the Fourth Proportional to 154,035.25, 212,560.99 and 86,038.67
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Solution
The fourth proportional to 154,035.25, 212,560.99 and 86,038.67 is: 118,729.09
Step by Step Solution
- Step 1: Write the proportion equation
154,035.25 : 212,560.99 = 86,038.67 : x - Step 2: Convert to fraction form
154,035.25/212,560.99 = 86,038.67/x - Step 3: Cross multiply
154,035.25x = 212,560.99 × 86,038.67 - Step 4: Simplify right side
154,035.25x = 18,288,464,873.48 - Step 5: Solve for x
x = 18,288,464,873.48/154,035.25 - Step 6: Final answer
x = 118,729.09
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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.