Finding the Fourth Proportional to 103,930.64, 143,424.50 and 56,183.99
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Solution
The fourth proportional to 103,930.64, 143,424.50 and 56,183.99 is: 77,534.02
Step by Step Solution
- Step 1: Write the proportion equation
103,930.64 : 143,424.50 = 56,183.99 : x - Step 2: Convert to fraction form
103,930.64/143,424.50 = 56,183.99/x - Step 3: Cross multiply
103,930.64x = 143,424.50 × 56,183.99 - Step 4: Simplify right side
103,930.64x = 8,058,160,673.76 - Step 5: Solve for x
x = 8,058,160,673.76/103,930.64 - Step 6: Final answer
x = 77,534.02
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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.