Finding the Fourth Proportional to 100,903.61, 139,246.97 and 58,486.74
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Solution
The fourth proportional to 100,903.61, 139,246.97 and 58,486.74 is: 80,711.70
Step by Step Solution
- Step 1: Write the proportion equation
100,903.61 : 139,246.97 = 58,486.74 : x - Step 2: Convert to fraction form
100,903.61/139,246.97 = 58,486.74/x - Step 3: Cross multiply
100,903.61x = 139,246.97 × 58,486.74 - Step 4: Simplify right side
100,903.61x = 8,144,101,037.74 - Step 5: Solve for x
x = 8,144,101,037.74/100,903.61 - Step 6: Final answer
x = 80,711.70
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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.