Finding the Fourth Proportional to 101,253.99, 139,729.95 and 55,935.09
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Solution
The fourth proportional to 101,253.99, 139,729.95 and 55,935.09 is: 77,190.12
Step by Step Solution
- Step 1: Write the proportion equation
101,253.99 : 139,729.95 = 55,935.09 : x - Step 2: Convert to fraction form
101,253.99/139,729.95 = 55,935.09/x - Step 3: Cross multiply
101,253.99x = 139,729.95 × 55,935.09 - Step 4: Simplify right side
101,253.99x = 7,815,807,328.95 - Step 5: Solve for x
x = 7,815,807,328.95/101,253.99 - Step 6: Final answer
x = 77,190.12
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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.