Finding the Fourth Proportional to 101,235.87, 139,671.68 and 65,471.13
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Solution
The fourth proportional to 101,235.87, 139,671.68 and 65,471.13 is: 90,328.28
Step by Step Solution
- Step 1: Write the proportion equation
101,235.87 : 139,671.68 = 65,471.13 : x - Step 2: Convert to fraction form
101,235.87/139,671.68 = 65,471.13/x - Step 3: Cross multiply
101,235.87x = 139,671.68 × 65,471.13 - Step 4: Simplify right side
101,235.87x = 9,144,462,391.24 - Step 5: Solve for x
x = 9,144,462,391.24/101,235.87 - Step 6: Final answer
x = 90,328.28
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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.