Finding the Fourth Proportional to 139,497.80, 209,246.70 and 122,001.80
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Solution
The fourth proportional to 139,497.80, 209,246.70 and 122,001.80 is: 183,002.70
Step by Step Solution
- Step 1: Write the proportion equation
139,497.80 : 209,246.70 = 122,001.80 : x - Step 2: Convert to fraction form
139,497.80/209,246.70 = 122,001.80/x - Step 3: Cross multiply
139,497.80x = 209,246.70 × 122,001.80 - Step 4: Simplify right side
139,497.80x = 25,528,474,044.06 - Step 5: Solve for x
x = 25,528,474,044.06/139,497.80 - Step 6: Final answer
x = 183,002.70
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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.