Finding the Fourth Proportional to 128,960,235.20, 193,440,352.80 and 99,734,916.80
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Solution
The fourth proportional to 128,960,235.20, 193,440,352.80 and 99,734,916.80 is: 149,602,375.20
Step by Step Solution
- Step 1: Write the proportion equation
128,960,235.20 : 193,440,352.80 = 99,734,916.80 : x - Step 2: Convert to fraction form
128,960,235.20/193,440,352.80 = 99,734,916.80/x - Step 3: Cross multiply
128,960,235.20x = 193,440,352.80 × 99,734,916.80 - Step 4: Simplify right side
128,960,235.20x = 19,292,757,492,270,648 - Step 5: Solve for x
x = 19,292,757,492,270,648/128,960,235.20 - Step 6: Final answer
x = 149,602,375.20
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.