Finding the Fourth Proportional to 101,381.36, 139,850.16 and 58,935.20
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Solution
The fourth proportional to 101,381.36, 139,850.16 and 58,935.20 is: 81,297.95
Step by Step Solution
- Step 1: Write the proportion equation
101,381.36 : 139,850.16 = 58,935.20 : x - Step 2: Convert to fraction form
101,381.36/139,850.16 = 58,935.20/x - Step 3: Cross multiply
101,381.36x = 139,850.16 × 58,935.20 - Step 4: Simplify right side
101,381.36x = 8,242,097,149.63 - Step 5: Solve for x
x = 8,242,097,149.63/101,381.36 - Step 6: Final answer
x = 81,297.95
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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.