Finding the Fourth Proportional to 128,501.66, 192,729.27 and 34,985.54
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Solution
The fourth proportional to 128,501.66, 192,729.27 and 34,985.54 is: 52,471.99
Step by Step Solution
- Step 1: Write the proportion equation
128,501.66 : 192,729.27 = 34,985.54 : x - Step 2: Convert to fraction form
128,501.66/192,729.27 = 34,985.54/x - Step 3: Cross multiply
128,501.66x = 192,729.27 × 34,985.54 - Step 4: Simplify right side
128,501.66x = 6,742,737,584.76 - Step 5: Solve for x
x = 6,742,737,584.76/128,501.66 - Step 6: Final answer
x = 52,471.99
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1.5x scale
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.