Finding the Fourth Proportional to 102,130.99, 140,940.76 and 57,418.99
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Solution
The fourth proportional to 102,130.99, 140,940.76 and 57,418.99 is: 79,238.20
Step by Step Solution
- Step 1: Write the proportion equation
102,130.99 : 140,940.76 = 57,418.99 : x - Step 2: Convert to fraction form
102,130.99/140,940.76 = 57,418.99/x - Step 3: Cross multiply
102,130.99x = 140,940.76 × 57,418.99 - Step 4: Simplify right side
102,130.99x = 8,092,676,089.03 - Step 5: Solve for x
x = 8,092,676,089.03/102,130.99 - Step 6: Final answer
x = 79,238.20
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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.