Finding the Fourth Proportional to 101,101.99, 139,521.23 and 55,779.97
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Solution
The fourth proportional to 101,101.99, 139,521.23 and 55,779.97 is: 76,976.62
Step by Step Solution
- Step 1: Write the proportion equation
101,101.99 : 139,521.23 = 55,779.97 : x - Step 2: Convert to fraction form
101,101.99/139,521.23 = 55,779.97/x - Step 3: Cross multiply
101,101.99x = 139,521.23 × 55,779.97 - Step 4: Simplify right side
101,101.99x = 7,782,489,605.24 - Step 5: Solve for x
x = 7,782,489,605.24/101,101.99 - Step 6: Final answer
x = 76,976.62
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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.