Finding the Fourth Proportional to 117,557.50, 162,278.99 and 79,368.75
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Solution
The fourth proportional to 117,557.50, 162,278.99 and 79,368.75 is: 109,562.39
Step by Step Solution
- Step 1: Write the proportion equation
117,557.50 : 162,278.99 = 79,368.75 : x - Step 2: Convert to fraction form
117,557.50/162,278.99 = 79,368.75/x - Step 3: Cross multiply
117,557.50x = 162,278.99 × 79,368.75 - Step 4: Simplify right side
117,557.50x = 12,879,880,587.56 - Step 5: Solve for x
x = 12,879,880,587.56/117,557.50 - Step 6: Final answer
x = 109,562.39
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1.5x scale
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.