Finding the Fourth Proportional to 127,982,989.84, 176,621,538.66 and 72,230,357.74
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Solution
The fourth proportional to 127,982,989.84, 176,621,538.66 and 72,230,357.74 is: 99,680,722.71
Step by Step Solution
- Step 1: Write the proportion equation
127,982,989.84 : 176,621,538.66 = 72,230,357.74 : x - Step 2: Convert to fraction form
127,982,989.84/176,621,538.66 = 72,230,357.74/x - Step 3: Cross multiply
127,982,989.84x = 176,621,538.66 × 72,230,357.74 - Step 4: Simplify right side
127,982,989.84x = 12,757,436,922,001,040 - Step 5: Solve for x
x = 12,757,436,922,001,040/127,982,989.84 - Step 6: Final answer
x = 99,680,722.71
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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.