Finding the Fourth Proportional to 185,639.79, 278,415.06 and 85,703.99
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Solution
The fourth proportional to 185,639.79, 278,415.06 and 85,703.99 is: 128,535.38
Step by Step Solution
- Step 1: Write the proportion equation
185,639.79 : 278,415.06 = 85,703.99 : x - Step 2: Convert to fraction form
185,639.79/278,415.06 = 85,703.99/x - Step 3: Cross multiply
185,639.79x = 278,415.06 × 85,703.99 - Step 4: Simplify right side
185,639.79x = 23,861,281,518.09 - Step 5: Solve for x
x = 23,861,281,518.09/185,639.79 - Step 6: Final answer
x = 128,535.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.