Finding the Fourth Proportional to 185,814.89, 256,425.90 and 100,931.99
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Solution
The fourth proportional to 185,814.89, 256,425.90 and 100,931.99 is: 139,286.88
Step by Step Solution
- Step 1: Write the proportion equation
185,814.89 : 256,425.90 = 100,931.99 : x - Step 2: Convert to fraction form
185,814.89/256,425.90 = 100,931.99/x - Step 3: Cross multiply
185,814.89x = 256,425.90 × 100,931.99 - Step 4: Simplify right side
185,814.89x = 25,881,576,374.54 - Step 5: Solve for x
x = 25,881,576,374.54/185,814.89 - Step 6: Final answer
x = 139,286.88
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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.