Finding the Fourth Proportional to 128,809.56, 193,332.21 and 65,674.95
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Solution
The fourth proportional to 128,809.56, 193,332.21 and 65,674.95 is: 98,572.52
Step by Step Solution
- Step 1: Write the proportion equation
128,809.56 : 193,332.21 = 65,674.95 : x - Step 2: Convert to fraction form
128,809.56/193,332.21 = 65,674.95/x - Step 3: Cross multiply
128,809.56x = 193,332.21 × 65,674.95 - Step 4: Simplify right side
128,809.56x = 12,697,083,225.14 - Step 5: Solve for x
x = 12,697,083,225.14/128,809.56 - Step 6: Final answer
x = 98,572.52
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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.