Finding the Fourth Proportional to 185,697.99, 256,266.05 and 100,815.05
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Solution
The fourth proportional to 185,697.99, 256,266.05 and 100,815.05 is: 139,126.30
Step by Step Solution
- Step 1: Write the proportion equation
185,697.99 : 256,266.05 = 100,815.05 : x - Step 2: Convert to fraction form
185,697.99/256,266.05 = 100,815.05/x - Step 3: Cross multiply
185,697.99x = 256,266.05 × 100,815.05 - Step 4: Simplify right side
185,697.99x = 25,835,474,780.64 - Step 5: Solve for x
x = 25,835,474,780.64/185,697.99 - Step 6: Final answer
x = 139,126.30
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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.