Finding the Fourth Proportional to 117,701.20, 176,551.80 and 42,905.80
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Solution
The fourth proportional to 117,701.20, 176,551.80 and 42,905.80 is: 64,358.70
Step by Step Solution
- Step 1: Write the proportion equation
117,701.20 : 176,551.80 = 42,905.80 : x - Step 2: Convert to fraction form
117,701.20/176,551.80 = 42,905.80/x - Step 3: Cross multiply
117,701.20x = 176,551.80 × 42,905.80 - Step 4: Simplify right side
117,701.20x = 7,575,096,220.44 - Step 5: Solve for x
x = 7,575,096,220.44/117,701.20 - Step 6: Final answer
x = 64,358.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.