Finding the Fourth Proportional to 101,291.97, 139,692.12 and 84,352.31
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Solution
The fourth proportional to 101,291.97, 139,692.12 and 84,352.31 is: 116,330.57
Step by Step Solution
- Step 1: Write the proportion equation
101,291.97 : 139,692.12 = 84,352.31 : x - Step 2: Convert to fraction form
101,291.97/139,692.12 = 84,352.31/x - Step 3: Cross multiply
101,291.97x = 139,692.12 × 84,352.31 - Step 4: Simplify right side
101,291.97x = 11,783,352,661.57 - Step 5: Solve for x
x = 11,783,352,661.57/101,291.97 - Step 6: Final answer
x = 116,330.57
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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.