Finding the Fourth Proportional to 128,259,901.51, 176,993,922.21 and 69,521,305.50
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Solution
The fourth proportional to 128,259,901.51, 176,993,922.21 and 69,521,305.50 is: 95,936,831.32
Step by Step Solution
- Step 1: Write the proportion equation
128,259,901.51 : 176,993,922.21 = 69,521,305.50 : x - Step 2: Convert to fraction form
128,259,901.51/176,993,922.21 = 69,521,305.50/x - Step 3: Cross multiply
128,259,901.51x = 176,993,922.21 × 69,521,305.50 - Step 4: Simplify right side
128,259,901.51x = 12,304,848,536,680,214 - Step 5: Solve for x
x = 12,304,848,536,680,214/128,259,901.51 - Step 6: Final answer
x = 95,936,831.32
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1.5x scale
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.