Finding the Fourth Proportional to 128,305,689.63, 192,460,108.88 and 84,864,521.31
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Solution
The fourth proportional to 128,305,689.63, 192,460,108.88 and 84,864,521.31 is: 127,297,823.33
Step by Step Solution
- Step 1: Write the proportion equation
128,305,689.63 : 192,460,108.88 = 84,864,521.31 : x - Step 2: Convert to fraction form
128,305,689.63/192,460,108.88 = 84,864,521.31/x - Step 3: Cross multiply
128,305,689.63x = 192,460,108.88 × 84,864,521.31 - Step 4: Simplify right side
128,305,689.63x = 16,333,035,011,371,680 - Step 5: Solve for x
x = 16,333,035,011,371,680/128,305,689.63 - Step 6: Final answer
x = 127,297,823.33
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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.