Finding the Fourth Proportional to 212,129.99, 318,127.40 and 69,948.77
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Solution
The fourth proportional to 212,129.99, 318,127.40 and 69,948.77 is: 104,900.86
Step by Step Solution
- Step 1: Write the proportion equation
212,129.99 : 318,127.40 = 69,948.77 : x - Step 2: Convert to fraction form
212,129.99/318,127.40 = 69,948.77/x - Step 3: Cross multiply
212,129.99x = 318,127.40 × 69,948.77 - Step 4: Simplify right side
212,129.99x = 22,252,618,655.23 - Step 5: Solve for x
x = 22,252,618,655.23/212,129.99 - Step 6: Final answer
x = 104,900.86
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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.