Finding the Fourth Proportional to 101,203.30, 139,665.99 and 55,881.12
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Solution
The fourth proportional to 101,203.30, 139,665.99 and 55,881.12 is: 77,118.95
Step by Step Solution
- Step 1: Write the proportion equation
101,203.30 : 139,665.99 = 55,881.12 : x - Step 2: Convert to fraction form
101,203.30/139,665.99 = 55,881.12/x - Step 3: Cross multiply
101,203.30x = 139,665.99 × 55,881.12 - Step 4: Simplify right side
101,203.30x = 7,804,691,947.11 - Step 5: Solve for x
x = 7,804,691,947.11/101,203.30 - Step 6: Final answer
x = 77,118.95
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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.