Finding the Fourth Proportional to 128,065,809.98, 176,730,874.79 and 69,328,473.19
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Solution
The fourth proportional to 128,065,809.98, 176,730,874.79 and 69,328,473.19 is: 95,673,323.86
Step by Step Solution
- Step 1: Write the proportion equation
128,065,809.98 : 176,730,874.79 = 69,328,473.19 : x - Step 2: Convert to fraction form
128,065,809.98/176,730,874.79 = 69,328,473.19/x - Step 3: Cross multiply
128,065,809.98x = 176,730,874.79 × 69,328,473.19 - Step 4: Simplify right side
128,065,809.98x = 12,252,481,713,935,292 - Step 5: Solve for x
x = 12,252,481,713,935,292/128,065,809.98 - Step 6: Final answer
x = 95,673,323.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.