Finding the Fourth Proportional to 100,824.80, 139,129.98 and 58,386.08
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Solution
The fourth proportional to 100,824.80, 139,129.98 and 58,386.08 is: 80,568.02
Step by Step Solution
- Step 1: Write the proportion equation
100,824.80 : 139,129.98 = 58,386.08 : x - Step 2: Convert to fraction form
100,824.80/139,129.98 = 58,386.08/x - Step 3: Cross multiply
100,824.80x = 139,129.98 × 58,386.08 - Step 4: Simplify right side
100,824.80x = 8,123,254,142.68 - Step 5: Solve for x
x = 8,123,254,142.68/100,824.80 - Step 6: Final answer
x = 80,568.02
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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.