Finding the Fourth Proportional to 100,368.99, 138,499.11 and 57,941.19
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Solution
The fourth proportional to 100,368.99, 138,499.11 and 57,941.19 is: 79,953.01
Step by Step Solution
- Step 1: Write the proportion equation
100,368.99 : 138,499.11 = 57,941.19 : x - Step 2: Convert to fraction form
100,368.99/138,499.11 = 57,941.19/x - Step 3: Cross multiply
100,368.99x = 138,499.11 × 57,941.19 - Step 4: Simplify right side
100,368.99x = 8,024,803,247.34 - Step 5: Solve for x
x = 8,024,803,247.34/100,368.99 - Step 6: Final answer
x = 79,953.01
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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.