Finding the Fourth Proportional to 128,178,481.80, 192,267,724.92 and 31,133,535.48
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Solution
The fourth proportional to 128,178,481.80, 192,267,724.92 and 31,133,535.48 is: 46,700,303.76
Step by Step Solution
- Step 1: Write the proportion equation
128,178,481.80 : 192,267,724.92 = 31,133,535.48 : x - Step 2: Convert to fraction form
128,178,481.80/192,267,724.92 = 31,133,535.48/x - Step 3: Cross multiply
128,178,481.80x = 192,267,724.92 × 31,133,535.48 - Step 4: Simplify right side
128,178,481.80x = 5,985,974,035,455,700 - Step 5: Solve for x
x = 5,985,974,035,455,700/128,178,481.80 - Step 6: Final answer
x = 46,700,303.76
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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.