Finding the Fourth Proportional to 102,984.01, 142,113.99 and 57,657.75
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Solution
The fourth proportional to 102,984.01, 142,113.99 and 57,657.75 is: 79,565.49
Step by Step Solution
- Step 1: Write the proportion equation
102,984.01 : 142,113.99 = 57,657.75 : x - Step 2: Convert to fraction form
102,984.01/142,113.99 = 57,657.75/x - Step 3: Cross multiply
102,984.01x = 142,113.99 × 57,657.75 - Step 4: Simplify right side
102,984.01x = 8,193,972,989.91 - Step 5: Solve for x
x = 8,193,972,989.91/102,984.01 - Step 6: Final answer
x = 79,565.49
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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.