Finding the Fourth Proportional to 118,605.70, 177,908.55 and 39,711.70
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Solution
The fourth proportional to 118,605.70, 177,908.55 and 39,711.70 is: 59,567.55
Step by Step Solution
- Step 1: Write the proportion equation
118,605.70 : 177,908.55 = 39,711.70 : x - Step 2: Convert to fraction form
118,605.70/177,908.55 = 39,711.70/x - Step 3: Cross multiply
118,605.70x = 177,908.55 × 39,711.70 - Step 4: Simplify right side
118,605.70x = 7,065,050,965.04 - Step 5: Solve for x
x = 7,065,050,965.04/118,605.70 - Step 6: Final answer
x = 59,567.55
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1.5x scale
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.