Finding the Fourth Proportional to 185,813.89, 256,424.52 and 100,930.99
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Solution
The fourth proportional to 185,813.89, 256,424.52 and 100,930.99 is: 139,285.50
Step by Step Solution
- Step 1: Write the proportion equation
185,813.89 : 256,424.52 = 100,930.99 : x - Step 2: Convert to fraction form
185,813.89/256,424.52 = 100,930.99/x - Step 3: Cross multiply
185,813.89x = 256,424.52 × 100,930.99 - Step 4: Simplify right side
185,813.89x = 25,881,180,663.87 - Step 5: Solve for x
x = 25,881,180,663.87/185,813.89 - Step 6: Final answer
x = 139,285.50
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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.