Finding the Fourth Proportional to 136,985.80, 205,478.70 and 84,497.80
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Solution
The fourth proportional to 136,985.80, 205,478.70 and 84,497.80 is: 126,746.70
Step by Step Solution
- Step 1: Write the proportion equation
136,985.80 : 205,478.70 = 84,497.80 : x - Step 2: Convert to fraction form
136,985.80/205,478.70 = 84,497.80/x - Step 3: Cross multiply
136,985.80x = 205,478.70 × 84,497.80 - Step 4: Simplify right side
136,985.80x = 17,362,498,096.86 - Step 5: Solve for x
x = 17,362,498,096.86/136,985.80 - Step 6: Final answer
x = 126,746.70
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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.