Finding the Fourth Proportional to 139,372.84, 192,335.86 and 75,711.88
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Solution
The fourth proportional to 139,372.84, 192,335.86 and 75,711.88 is: 104,483.12
Step by Step Solution
- Step 1: Write the proportion equation
139,372.84 : 192,335.86 = 75,711.88 : x - Step 2: Convert to fraction form
139,372.84/192,335.86 = 75,711.88/x - Step 3: Cross multiply
139,372.84x = 192,335.86 × 75,711.88 - Step 4: Simplify right side
139,372.84x = 14,562,109,552.02 - Step 5: Solve for x
x = 14,562,109,552.02/139,372.84 - Step 6: Final answer
x = 104,483.12
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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.