Finding the Fourth Proportional to 138,424,244.80, 207,636,367.20 and 132,526,926.40
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Solution
The fourth proportional to 138,424,244.80, 207,636,367.20 and 132,526,926.40 is: 198,790,389.60
Step by Step Solution
- Step 1: Write the proportion equation
138,424,244.80 : 207,636,367.20 = 132,526,926.40 : x - Step 2: Convert to fraction form
138,424,244.80/207,636,367.20 = 132,526,926.40/x - Step 3: Cross multiply
138,424,244.80x = 207,636,367.20 × 132,526,926.40 - Step 4: Simplify right side
138,424,244.80x = 27,517,409,553,877,772 - Step 5: Solve for x
x = 27,517,409,553,877,772/138,424,244.80 - Step 6: Final answer
x = 198,790,389.60
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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.