Finding the Fourth Proportional to 128,521,780, 192,789,402.16 and 97,864,443.12
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Solution
The fourth proportional to 128,521,780, 192,789,402.16 and 97,864,443.12 is: 146,801,790.96
Step by Step Solution
- Step 1: Write the proportion equation
128,521,780 : 192,789,402.16 = 97,864,443.12 : x - Step 2: Convert to fraction form
128,521,780/192,789,402.16 = 97,864,443.12/x - Step 3: Cross multiply
128,521,780x = 192,789,402.16 × 97,864,443.12 - Step 4: Simplify right side
128,521,780x = 18,867,227,481,826,124 - Step 5: Solve for x
x = 18,867,227,481,826,124/128,521,780 - Step 6: Final answer
x = 146,801,790.96
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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.