Finding the Fourth Proportional to 100,023.17, 138,027.56 and 57,011.99
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Solution
The fourth proportional to 100,023.17, 138,027.56 and 57,011.99 is: 78,674.02
Step by Step Solution
- Step 1: Write the proportion equation
100,023.17 : 138,027.56 = 57,011.99 : x - Step 2: Convert to fraction form
100,023.17/138,027.56 = 57,011.99/x - Step 3: Cross multiply
100,023.17x = 138,027.56 × 57,011.99 - Step 4: Simplify right side
100,023.17x = 7,869,224,895.25 - Step 5: Solve for x
x = 7,869,224,895.25/100,023.17 - Step 6: Final answer
x = 78,674.02
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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.