Finding the Fourth Proportional to 139,671.24, 192,750.60 and 76,013.28
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Solution
The fourth proportional to 139,671.24, 192,750.60 and 76,013.28 is: 104,900.66
Step by Step Solution
- Step 1: Write the proportion equation
139,671.24 : 192,750.60 = 76,013.28 : x - Step 2: Convert to fraction form
139,671.24/192,750.60 = 76,013.28/x - Step 3: Cross multiply
139,671.24x = 192,750.60 × 76,013.28 - Step 4: Simplify right side
139,671.24x = 14,651,605,327.97 - Step 5: Solve for x
x = 14,651,605,327.97/139,671.24 - Step 6: Final answer
x = 104,900.66
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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.